Progress of Research & Developmentof E-CNY in China

Working Group on E-CNY Research and Development of thePeople's Bank of China
July, 2021

Progress on Research and Development of E-CNY in China
Introduction
The robust development of network technology and digital economy call for retailpayment services that are more convenient, safe, inclusive and privacy-friendly. In
many countries and regions, central banks or monetary authorities have kept a close
eye on Fintech development and sought to digitalize fiat currency, putting theory into
practice.
The People’s Bank of China (PBOC) attaches great importance to the research anddevelopment of digital fiat currency. In 2014, it set up a task force to study digital fiat
currency, and its scope of research covered the issuance framework, key technologies,
issuance and circulation environment, and international experience. In 2016, the
PBOC established its Digital Currency Institute, which developed the first-generation
prototype of digital fiat currency. At end-2017, upon the approval of the State Council,
the PBOC began to work with commercial institutions in developing and testing
digital fiat currency (hereinafter referred to as e-CNY, a provisional abbreviation
following international practices). So far, as the top-level design, function
development, and system testing has been basically completed, the PBOC has
initiated pilot programs in some representative regions, while making sure the pilots
run in a steady, safe, managed, innovative and practical manner.
The PBOC working group on e-CNY research and development hereby releases thiswhite paper to clarify the PBOC’s position, to explain the background, objectives andvisions, design framework and policy considerations for the e-CNY system, to seek
public comments, as well as to deepen communication with all those concerned andjoin hands with them in building an open, inclusive, inter-operable and innovative
currency service system for the era of digital economy.
1. Background of research and development
1.1 The development of digital economy calls for new retail payment
infrastructures that are safe, inclusive and adaptive to the digital era.
Currently, as the Chinese economy is shifting from high-speed growth to high-quality
development, technological innovation represented by the digital economy has
become an important driver of development. With the rapid development of digitaltechnologies such as big data, cloud computing, artificial intelligence, blockchain andthe Internet of Things, the digital economy has witnessed various new models andnew businesses. Covid-19 has sped up digital transformation of people’s work and life,
and online shopping, remote working and e-learning have become more active. The
digital economy has expanded in its geographic coverage, and the less developed andremote areas have witnessed a rising demand for online financial services.
In recent years, the rapid development of electronic payment, especially mobile
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payment in China has provided the public with convenient and efficient retailpayment services, which boosted development of the digital economy, helped the
public get used to digital payment, and created higher demand for technology and newservices. Meanwhile, a safer, more inter-operable and more inclusive retail payment
infrastructure which meets diversified payment needs is an important public good forhigher quality growth. Such infrastructure will deliver better and more efficient basic
financial services, ensure smooth domestic circulations, and support the building of a
new development paradigm.
1.2 The functions of cash and the environment of using cash are changing
profoundly.
As the digital economy develops, the share of transactions using cash is declining in
China. According to a survey conducted by the PBOC in 2019, the number and valueof transactions via mobile payment accounted for 66 percent and 59 percent of thetotal, while those paid in cash accounted for 23 percent and 16 percent, and those paidby card 7 percent and 23 percent, respectively. Among those surveyed, 46 percent
used no cash in any transaction during the survey period. It should be noted, however,from end-2016 to end-2020, cash in circulation (M0) registered RMB6.83 trillion,
RMB7.06 trillion, RMB7.32 trillion, RMB7.72 trillion and RMB8.43 trillion,
respectively, representing a small rise. In the areas where financial services are lessavailable, in particular, cash usage is still quite common. Meanwhile, the cost of cash
management is quite high. Every element in the cash cycle consumes much human,
physical and financial resource. Such elements include banknote design, minting andprinting, transportation, deposit and withdrawal, identification, processing, reflow,
destruction, counterfeit prevention and etc.
1.3 Cryptocurrencies, especially global stablecoins (GSC), have developed
rapidly.
Since the creation of Bitcoin, the private sector has launched a variety of so-called
cryptocurrencies. According to incomplete statistics, there are over 10,000 kinds ofcryptocurrencies which have gained some influence, whose total value exceeds
USD1.3 trillion.1 Adopting blockchain and encryption technology, cryptocurrencies
such as Bitcoin are claimed to be decentralized and entirely anonymous. However,given their lack of intrinsic value, acute price fluctuations, low trading efficiencies
and huge energy consumption, they can hardly serve as currencies used in daily
economic activities. In addition, cryptocurrencies are mostly speculative instruments,
and therefore pose potential risks to financial security and social stability. Moreover,they have been employed as payment instruments for money-laundering and otherillegal economic activities. To tackle the relatively big price fluctuation concern ofcryptocurrencies, some commercial institutions launched so-called “stablecoins”, andtried to stabilize their values by pegging them to sovereign currencies or related assets.
Some commercial institutions even plan to launch global stablecoins, which will bring1

Source: the website of CoinMarketCap, as of July 15th, 2021.
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risks and challenges to the international monetary system, payment and clearing
system, monetary policies, cross-border capital flow management and etc.
1.4 The international community pays close attention to central bank digitalcurrency (CBDC) and is exploring CBDC options.
At the moment, many major economies are actively considering or advancing
research and development of CBDC. According to the latest survey conducted by the
Bank for International Settlements (BIS) on central banks in 65 countries or
economies, about 86 percent have carried out researches on digital currencies.
Meanwhile, the proportion of central banks that were performing experiments ordeveloping a proof-of-concept prototype increased from 42 percent in 2019 to 60
percent in 2020. Publicly available information shows that, in recent years, central
banks of the US, the UK, France, Canada, Sweden, Japan, Russia, Korea andSingapore as well as the European Central Bank have all disclosed theirconsiderations and plans regarding CBDC in various ways. Some central banks haveinitiated or even completed preliminary trials.
2. Definition, objectives and visions
2.1 Definition of e-CNY
E-CNY is the digital version of fiat currency issued by the PBOC and operated byauthorized operators. It is a value-based, quasi-account-based and account-based
hybrid payment instrument, with legal tender status and loosely-coupled accountlinkage. It has the following connotations:First, e-CNY is the fiat currency issued by the central bank. Firstly, e-CNY has all
the basic functions of money, i.e., unit of account, medium of exchange and store ofvalue. Same as the physical form of RMB, e-CNY is China’s legal tender. Secondly,
e-CNY is the digital version of China’s fiat currency. Throughout history, the form of
currency has evolved from objects, metal coins to banknotes. Such evolution ofcurrency is a result of progress made in science and technology as well as evolution of
economic activities. The issuance and circulation of e-CNY is identical with physical
RMB, while the value of the former is transferred in a digital form. Thirdly, e-CNY isthe central bank’s liabilities to the public. Backed by sovereign credit, e-CNY has thestatus of legal tender.
Second, e-CNY adopts a centralized management model and a two-tieroperational system. The right to issue e-CNY belongs to the state. The PBOC lies atthe center of the e-CNY operational system. It issues e-CNY to authorized operators
which are commercial banks, and manages e-CNY through its whole life cycle.
Meanwhile, it is the authorized operators and other commercial institutions thatexchange and circulate e-CNY to the public.
Third, e-CNY is mainly a substitute for cash in circulation (M0), and will coexist
with physical RMB. Both e-CNY and physical RMB are the PBOC’s liabilities to the3public, with the same legal status and economic value. The PBOC will issue e-CNY
and physical RMB in parallel, and will take account of both during daily datacollection, analysis and management. International experience shows that, as an
economy matures, there naturally arises the need for more diversified means of
payment. China is a large country with vast territory, large population, multiple ethnic
groups and wide differences in regional development. In such a society, people’s
payment habits, age and security needs vary. Therefore, physical RMB enjoys
advantages that could not be replaced by other means of payment. As long as there isdemand for the physical RMB, the PBOC will neither stop supplying it, nor replace it
via administrative order.
Fourth, as retail CBDC, e-CNY mainly serves domestic retail payment demands.
Categorized by user and purpose, there are two kinds of CBDC, wholesale and retail.
Wholesale CBDC is mainly issued to institutions such as commercial banks andmostly serve large-value settlement. Retail CBDC is issued to the public for dailytransactions. Major countries and economies vary in their priorities of developing
CBDC, with some focusing on wholesale transactions and some dedicated to
improving the efficiency of the retail system. E-CNY is a retail CBDC issued to the
public. With a modern domestic payment system in China, the issuance of e-CNY will
fully meet the public’s daily payment needs, further improve the efficiency of theretail payment system and reduce the cost of retail payment.
Fifth, in the future digital retail payment system, e-CNY and funds in theelectronic account of authorized operators are inter-operable, and bothconstitute cash in circulation
circulation. Commercial banks and licensed non-bank payment
institutions that meet compliance requirements (including anti-money laundering andcountering terrorist financing requirements) and regulatory requirements regarding
risk management on a comprehensive and on-going basis may participate in thee-CNY payment system as per recognition and support of the central bank. They canalso fully tap existing payment and other infrastructures while providing digital retailpayment services for customers.
2.2 Objectives and visions
The development of China’s e-CNY system aims to create a new form of RMB thatmeets the public’s demand for cash in the era of digital economy. Supported by aretail payment infrastructure that is reliable, efficient, adaptive and open, the e-CNY
system will bolster China’s digital economy, enhance financial inclusion, and makethe monetary and payment systems more efficient.
The first objective is to diversify the forms of cash provided to the public by thecentral bank, satisfy the public
public’’s demand for digital cash and support financial
inclusion. As digital technology and electronic payment develop, the use of cash inretail payments has been on a decline. However, it’s the mandate of the central bankto ensure the public’s direct access to cash, and make sure the unit of account is
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consistent in the era of digital economy by digitalizing cash. An e-CNY system will
make financial services more accessible, providing fiat money for a large populationin various scenarios. Those without bank accounts can enjoy basic financial services
provided via e-CNY wallet, and foreign residents temporarily travelling in China can
open an e-CNY wallet to meet daily payment needs without opening a domestic bankaccount. In addition, as e-CNY is settled upon payment, businesses and related parties
can improve cash flow while enjoying more convenient payment services.
The second objective is to support fair competition, efficiency and safety of retailpayment services. E-CNY will provide the public with a new interoperable way of
payment, which will further diversify payment instruments and make the payment
system more efficient and safer. The Chinese authorities support coordinateddevelopment of various payment methods. E-CNY and existing electronic payment
tools are on different dimensions. They complement each other, and also differ.
Defined as a substitute for M0, e-CNY mainly serves retail payment. Its issuance aims
at enhancing financial inclusion. It draws on existing electronic payment technologies
and supplements the existing system. While sharing similar payment functions,e-CNY and existing electronic payment instruments differ in many aspects. First,
e-CNY is China’s legal tender, which is the safest asset in China. Second, it has
intrinsic value, and can be transferred without relying on bank accounts. In addition, it
supports off-line transactions and is settled upon payment. Third, e-CNY supports
managed anonymity, which helps protect privacy and user information.
The third objective is to echo the international initiative and explore theimprovement of cross-border payments. Whether e-CNY will be used incross-border payments, and to promote RMB internationalization draws muchattention. First of all, cross-border payment involves various complicated issues suchas monetary sovereignty, foreign exchange policies and arrangements, as well as
regulatory and compliance requirements. It is also a challenge that the international
community is committed to address. The internationalization of a currency is a natural
result of market selection. The international status of a country’s currency depends on
its economic fundamentals and the depth, efficiency and openness of its financial
markets. Therefore, though technically ready for cross-border use, e-CNY is still
designed mainly for domestic retail payments at present. Looking ahead, the PBOC
will actively respond to initiatives of G20 and other international organizations on
improving cross-border payments, and explore the applicability of CBDC incross-border scenarios. Based on experiences of domestic trials and international
demand, and preconditioned on mutual respect to monetary sovereignty andcompliance, the PBOC will explore pilot cross-border payment programs and will
work with relevant central banks and monetary authorities to set up exchange
arrangements and regulatory cooperation mechanisms on digital fiat currency in linewith the principle of “no detriment,” “compliance,” and “interconnectivity.”22First, no disruption. CBDC supplied by one central bank should continue to support the healthy evolution of the5Meanwhile, the PBOC will uphold the principle of having a two-tier and risk-freesystem in order to meet regulatory and compliance requirements of various countries.
3. Framework of design
The design of e-CNY system follows the concept of “safe and inclusive, innovative
and user-friendly, and time-evolving.” The principles for design are based on aholistic consideration of monetary functions, market demand, supply model,
technological support, and cost-benefit. Studies are conducted and revised on
currency properties, operating model, digital wallet ecosystem building, complianceand responsibilities, selection of technology roadmap, and regulatory system. Thisaims to deliver an open, inclusive, sound, and reliable e-CNY system design plan thatsuits China.
3.1 Principles for design
Compliance with laws and regulations. The institutional design of e-CNY system
strictly complies with regulations on the administration of RMB, anti-money
laundering and countering the financing of terrorism (AML/CFT), the administrationof foreign exchange, and data and privacy protection. The operation of e-CNY should
be included in the regulatory framework.
Safety and Convenience. The e-CNY system is based on broad accounts, loosely
coupled with bank accounts and has its system of value. This makes it adaptive tovarious on-line and off-line payments. Difficulties resulting from limited
technological literacy and telecommunications coverage are minimized to meet
people’s demand for safe and convenient payment instruments. The e-CNY
operational system is highly secure, highly usable, and highly expandable andconcurrent, which can ensure business continuity.
Openness and Compatibility. The PBOC leverages on the advantage andprofessional experience of authorized operators and aspires to keep technology
up-to-date by promoting technological competition and upgrading in line with theprinciple of evolving with the time so as to avoid the excessive concentration ofsystem operational risk. The e-CNY system supports interoperability with traditional
electronic payment systems. It makes full use of existing financial infrastructures tointernational monetary system. CBDC supplied by one central bank should not disrupt other central bank’s
currency sovereignty and their ability to fulfill its mandate for monetary and financial stability, and meanwhileshould protect the legitimate rights of consumers and boost fair competition.
Second, compliance. Cross-border payments arrangements with CBDC should have a sound legal system and astable operational system, comply with the regulations and laws of the jurisdictions concerned, such as capitalmanagement and foreign exchange mechanism. Information flow and fund flow could be synchronized, so as tofacilitate the advancement of cross-border trade, bolster the development of real economy and meet the regulatory
requirements for anti-money laundering and countering terrorist financing.
Third, interoperability. The development of CBDC should fully tap the role of the existing infrastructures andleverage Fintech so as to enable interoperability between CBDC systems of different jurisdictions as well as
between CBDC systems and incumbent payment systems. In the meanwhile, its development should contribute tothe orderly development of the payment system and guard against market fragmentation.
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connect digital wallets of different operators as well as connect e-CNY wallet withbank accounts, thus improving the interoperability of payment instruments.
3.2 Features of e-CNY design
The design of e-CNY takes account of the advantages of both physical RMB andelectronic payment instruments. Therefore it shares both the features of physical RMB,
such as settlement upon payment and anonymity, and the features of electronic
payment instruments, which are less costly, highly portable, highly efficient andhard-to-counterfeit. The design of e-CNY mainly considers the following features:
3.2.1 Identifiable both as an account-based and a value-based system
E-CNY is an account-based, quasi-account-based and value-based hybrid payment
instrument. It has a variable face value and its value transfer takes the form ofcryptocurrency strings.
3.2.2 Non-interest accrual
The e-CNY is a substitute for M0. Thus, it is treated the same as the physical RMB
under M0, which carries and pays no interest.
3.2.3 Low costs
Consistent with the management of physical RMB, the PBOC does not chargeauthorized operators for exchange and circulation services, and the operators do not
charge individual clients for the exchange of e-CNY either.
3.2.4 Settlement upon payment
According to settlement finality, the e-CNY is loosely coupled with bank accounts,
and thus payments through e-CNY wallets are settled upon payment.
3.2.5 Anonymity (managed anonymity)
E-CNY follows the principle of “anonymity for small value and traceable for highvalue,” and attaches great importance to protecting personal information and privacy.
It aims to meet the public demand for anonymous small value payment services basedon the risk features and information processing logic of current electronic payment
system. Meanwhile, it is necessary to guard against the misuse of e-CNY in illegal
and criminal activities, such as tele-fraud, Internet gambling, money laundering, andtax evasion by making sure that transactions comply with AML/CFT requirements.
The e-CNY system collects less transaction information than traditional electronic
payment and does not provide information to third parties or other government
agencies unless stipulated otherwise in laws and regulations. Internally, the PBOC
sets up a firewall for e-CNY-related information, and strictly implements information
security and privacy protocols, such as designating special personnel to manage
information, separating e-CNY from other businesses, applying a tiered authorization
system, putting in place checks and balances, and conducting internal audits. Any
arbitrary information requests or use are prohibited.
73.2.6 Safety
E-CNY adopts a variety of technologies, including digital certificate system, digital
signature, and encrypted storage to make double-spending, illegal duplication andcounterfeit, transaction falsification, and repudiation unfeasible. A multi-layer security
system has been initially established to guarantee that e-CNY has a safe life cycle andrisks are manageable.
3.2.7 Programmability
E-CNY obtains programmability from deploying smart contracts that don’t impair its
monetary functions. Under the premise of security and compliance, this featureenables self-executing payments according to predefined conditions or terms agreed
between two sides, so as to facilitate business model innovation.
3.3 Design of e-CNY operational system
In line with the central bank’s mandates, there are two options to operate digital fiat
currency. One is single-tier operation under which the central bank directly provides
issuance, circulation, and maintenance services for the general public. The other is
two-tier operation under which central bank issues digital fiat currency to authorized
operators and then these operators take charge of exchange and circulation.
E-CNY adopts two-tier operation whereby the PBOC is responsible for issuance anddisposal, inter-institution connect and wallet ecosystem management. Additionally, it
prudently selects commercial banks with certain strengths in capital and technology as
authorized operators to take the lead in providing e-CNY exchange services. Other
commercial banks and institutions, under the PBOC’s centralized management, givefull play to their creativity, and collectively provide services for e-CNY circulation.
Specifically, under the quota management of the PBOC, the authorized operators open
different types of digital wallets for customers based on the strength of customer
personal information identification, and provide e-CNY exchange services. In themeantime, to enable secure and effective operation, authorized operators and relatedcommercial institutions jointly provide e-CNY circulation services and retailmanagement, including innovation on payment product design, system development,
scenario expansion, marketing, business processing as well as operation andmaintenance. The PBOC will try to keep a level-playing field and ensure that themarket plays a decisive role in resource allocation. This will incentivize allparticipants and unleash their creativity, and maintain financial stability. The two-tiersystem can fully tap authorized operators’ advantage in resources, talents, andtechnology to build a market-driven system that promotes innovation and competition.
On top of that, since the public is used to accessing financial services via commercial
banks, the two-tier system can increase the public acceptance of e-CNY.
3.4 Design of e-CNY wallet
Digital wallets are the medium of e-CNY that reaches out to users. Based on
8centralized management, unified cognition and anti-counterfeiting, the PBOC makes
the rules, while authorized operators jointly develop and share apps on mobile devices.
They manage wallets, authenticate e-CNY, and develop wallet ecological platforms toenable operator-specific visual system and special features as well as online andoffline applications in all scenarios. This aims to satisfy the different types ofdemands of different users at different levels. Digital wallets must be inclusive andobstacles arising from “digital divide” should be avoided.
3.4.1 There are different types of wallets, depending on the strength of customer
personal information identification.
Authorized operators assign different types of digital wallets to customers based on
the strength of their personal information identification, and set per-transaction anddaily limits as well as maximum balance according to the strength of real-nameinformation. The least-privileged wallets can be opened without providing identities
to reflect the principle of anonymity. Users can open least-privileged anonymous
wallets by default and upgrade them to higher-level real-name ones as needed.
3.4.2 There are personal and corporate wallets, depending on the type of holder.
Natural persons and self-employed individuals can open individual wallets, on whichclassification of transaction and balance limits are placed according to the strength ofcustomer personal information identification; legal persons and unincorporated
institutions can open corporate wallets. Transaction and balance limits are determined
depending on whether the wallet is opened remotely. The functions of wallets can becustomized to suit the needs of users.
3.4.3 There are software and hardware wallets, depending on the carrier.
A software wallet provides services through mobile payment apps, softwaredevelopment kit (SDK), and application programming interface (API). A hardware
wallet uses security chips and other technologies to enable the functions of e-CNY. It
is supported by IC card, mobile phones, wearable objects, and the Internet of Things
devices. Combining these two types of wallets can enrich the wallet ecosystem andmeet the needs of different groups of people.
3.4.4 There are parent wallets and sub-wallets, depending on the authorization
authorization..
The wallet holder can set the main wallet as parent wallet and open several
sub-wallets under it. Individuals are able to set payment caps, payment conditions,personal privacy protection and other functions through sub-wallets; enterprises andinstitutions are able to pool and distribute funds and manage finance throughsub-wallets.
3.4.5 The PBOC together with authorized operators and relevant organizations
jointly build, own, and share the e-CNY wallet ecological platform.
A matrix of e-CNY wallet will be developed from the above dimensions. Based on
this, the PBOC makes the rules, while authorized operators provide the basic
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functions and cooperate with relevant market players to further develop various
payment and financial products. This will help build a wallet ecological platform thatcan meet the needs in multiple scenarios and enable their respective special functions.
3.5 Defining obligations and entities of compliance3.5.1 Obligations in AML/CFT complianceAs e-CNY is China’s fiat currency, existing international standards and Chinese lawson AML/CFT apply. Authorized operators and other commercial institutions
providing e-CNY exchange and circulation services are entities to perform AML
duties and thus undertake AML obligations accordingly, including customer due
diligence, keeping customers’ identity data and records of transactions, and reporting
large-value and suspicious transactions. While performing AML duties, authorized
operators and other commercial institutions should protect business secrets, individual
privacy and personal information in line with laws, and should not divulge customers’
identity data or records of transactions. The PBOC, as the competent administrative
authority for AML, conducts AML regulation by urging all parties concerned to fulfill
their AML obligations and supervising the fulfillment accordingly.
3.5.2 Protection of consumers
consumers’’ rights and interests
The division of responsibilities for and the job of protecting consumers’ rights andinterests in the e-CNY system are the same as that of cash. The PBOC and authorized
operators are responsible for authenticating e-CNY via its certificate and serial
number. Authorized operators properly handle possible disputes and customer’s loss
according to relevant dispute settlement mechanisms. The PBOC protects the rights
and interests of consumers in e-CNY exchange and circulation through regulatory
evaluation.
3.6 Selection of technology roadmap
The selection of technology roadmap of e-CNY features long-term evolution, constantiteration and dynamic upgrading. Regular evaluations based on market needs arecarried out for continuous improvements. Authorized operators may select their own
technology roadmaps based on their actual demands and technological advantages, so
as to maintain the insight and foresight into future technology.
The e-CNY system adopts a distributed and platform-based design, which enhances
the resilience and expansibility of the system and supports the rapid growth in thevolume of e-CNY transactions. To ensure the reliability and soundness of the system,
the PBOC uses a mix of technologies such as trusted computing and special
encryption based on hardware and software integration. The PBOC also builds up
multi-layer security systems and design a data center solution featuring multisite highavailability and 24/7 non-stop services, thus guaranteeing city-level disaster tolerance
and business continuity.
The e-CNY system combines centralized architecture with distributed architecture,10forming a hybrid technical framework featuring the co-existence of dual states,
namely, steady state and agile state, as well as the integrated development ofcentralized and distributed architectures.
3.7 Regulatory framework
The research and development of e-CNY is in line with the legal framework of China.
Authorized by the Law of the People’s Bank of China, the PBOC performs the
responsibility of issuing RMB and supervising its circulation. The right to issue RMB
is held exclusively by the PBOC. The newly released Law of the People’s Bank of
China (Revised Draft for Comments) further clarifies that “RMB includes both
physical and digital forms.”
However, regulatory measures and requirements for e-CNY need to be tailor-made.
Regulation of e-CNY should be based on the principle of ensuring its property as a
fiat currency, holding up to the bottom line of risk prevention and supporting
innovative developments. The regulatory goals are to establish the management
system for e-CNY business, make clear regulatory requirements for authorized
operators, implement laws and rules on AML/CFT, strengthen the protection of user’s
personal information, and create a safe, enabling and regulated environment for theuse of e-CNY.
4. Implications of CBDC and risk mitigation strategy of the e-CNY system
There is a divergent view about the implications of retail CBDC. Debates mainly
focus on whether it could trigger financial disintermediation, weaken monetary policy
and exacerbate bank runs. As the research and design schemes of retail CBDC may
have different implications for monetary policy and financial stability, the PBOC
attaches great importance to reducing risks and preventing potential impact of retail
CBDC through top-level designs.
4.1 International opinions on the implications of retail CBDC
4.1.1 Implications for monetary policy
Some believe that retail CBDC is more attractive than deposits and may lead tofinancial disintermediation, narrow banking, and credit squeeze, while others argue
that easy availability of CBDC can enhance the transmission of policy rates to themoney and credit markets. If CBDC bears interest at a relatively attractive level,
institutional investors might move from low-risk assets such as short-term
government securities to CBDC, which will have an impact on the price of theseassets. Therefore, in designing CBDC, central banks should take into account theformulation and implementation of monetary policy. However, some also argue that if
CBDC bears no interest at all, the risk of CBDC competing with low-risk assets suchas commercial bank deposits will be lower, and the potential impact on monetary
policy will be mitigated.
4.1.2 Implications for financial stability
11Some point out that CBDC, as the safest asset, could exacerbate bank runs in times ofcrisis. Residents and companies can easily convert bank deposits into CBDC, causing
financial disintermediation and amplifying financial volatility. In particular, whensystemic risks emerge, CBDC will serve as a channel for the public to quickly switch
to safe assets. However, there are voices that CBDC will not have significant impact
because quick interbank transfers have already been made possible under the current
e-payment systems. In times of bank crisis or even economic crisis, e.g. currency
crisis or sovereign debt crisis, funds will be withdrawn from all domestic assets,
including CBDC, instead of merely shifting from bank deposits to CBDC.
4.2 Design of the e-CNY system to mitigate negative impact
Since the start of research on e-CNY, the PBOC has been paying close attention to theimplications of retail CBDC for monetary system, monetary policy, financial markets,and financial stability, among others. The PBOC leverages on operational,
technological and policy designs to minimize the impact of e-CNY system on existing
monetary system, financial system, and the real economy.
To reduce competition with bank deposits, e-CNY is a substitute for M0 and pays nointerest. It circulates in the same way as the physical RMB in a two-tier system underwhich commercial banks exchange e-CNY for the public. Meanwhile, the PBOC has
put in place system frictions as appropriate to prevent the rapid spread of bank runs.
To promote the use of e-CNY in retail payment scenarios, ease the crowding-out ofbank deposits, and prevent arbitrage as well as procyclical effects under stressful
conditions, the PBOC has come up with a tiered design of e-CNY wallet withdifferent caps on transaction and balance for different types of e-CNY wallets.
Additionally, the PBOC has set up a framework of big data analysis, risk monitoringand early warning for e-CNY to enhance the foresightedness, accuracy andeffectiveness of e-CNY management.
Digital fiat currency is a new thing. Its impact on the economy and the financial sector
can be assessed through pilot tests and practices. The PBOC is carrying out e-CNY
pilot programs with the focus on the implications of e-CNY for monetary policy,
financial markets and financial stability in the pilot regions. Based on the findings ofthe pilot programs, the PBOC will iterate and improve the e-CNY design accordingly.
5. Progress in work
The PBOC has made sustained efforts to explore, update and improve the relevant
theories and technologies on digital fiat currency, which has brought into shape thecurrent e-CNY model and business framework. Going forward, the PBOC will build
upon test results and further improve technological, business and policy frameworks.
5.1 Previous work
From 2014 to 2016, the PBOC established the digital fiat currency research group,and kicked off research in this field. The research group conducted in-depth studies in
12issuance and business operation framework, key technologies, circulation
environment and international practices on digital fiat currency. As a result, the theoryof digital fiat currency for the initial stage took shape. In 2016, the PBOC built theconcept prototype of China’s first-generation digital fiat currency, established theDigital Currency Institute (DCI), and proposed the top-level designs and fundamental
features of e-CNY, including the two-tier operational system, substitute for M0,
loosely coupled with bank accounts, and managed anonymity.
Under this framework and approved by the State Council, the PBOC started thee-CNY R&D project at the end of 2017. Large commercial banks, telecom operators
and Internet companies with high rankings in asset size and market share andstrengths in technology development were selected to participate in this project. With
long-term and evolutionary vision embedded in the process of top-level designs andR&D, the PBOC and participating institutions developed and improved e-CNY apps
through three phases, i.e., development and testing, internal verification, and managed
external pilot. The PBOC has developed three main functions of e-CNY, which areexchange and circulation management, interoperability and wallet ecosystem. In themeantime, based on the e-CNY R&D framework, the PBOC has built a relatively
complete standard system, covering general requirements, business operation,interoperability, wallet, security and regulation.
Following the principle of being steady, secure, managed, innovative and practical,
the PBOC has launched e-CNY pilots in Shenzhen, Suzhou, Xiong’an, Chengdu andscenarios in the 2022 Beijing Winter Olympics since the end of 2019. The pilot runs
were designed to test the reliability of theories, the stability of systems, the usabilityof functions, the convenience of processes, the applicability of scenarios and thecontrollability of risks. Starting from November 2020, Shanghai, Hainan, Changsha,
Xi’an, Qingdao and Dalian joined in the pilot. The selection of pilot places for e-CNY
R&D project takes into account factors such as major national development strategies,
coordinated regional development strategies, as well as city-specific industrial andeconomic features. The pilot program now spans the Yangtze River Delta, the Pearl
River Delta, the Beijing-Tianjin-Hebei region, and China’s central, western,northeastern and northwestern regions. A wide range of pilot places is conducive to
testing and assessing the application of e-CNY in different parts of China.
As of June 30, 2021, e-CNY has been applied in over 1.32 million scenarios, covering
utility payment, catering service, transportation, shopping, and government services.
More than 20.87 million personal wallets and over 3.51 million corporate wallets had
been opened, with transaction volume totaling 70.75 million and transaction value
approximating RMB34.5 billion. Supported by local governments, some cities
distributed red packets of e-CNY to consumers. While some pilot tests involved realusers and were conducted under different scenarios, large-scale tests were also
arranged in batches. The pilot program tested the business and technological designs
as well as whether the e-CNY system is stable, the product is user-friendly and the13scenario is applicable. It also deepened people’s understanding of the design
philosophy of e-CNY.
During the pilot, the PBOC focused on exploring the innovation of e-CNY application
models. Smart contracts were used to make the e-CNY programmable, more
expandable, and better integrated into various scenarios. Through collaboration withselected mobile phone producers, the PBOC studied dual offline payment and other
innovations on mobile devices. Smartphone-free hardware wallets based on smart
visual cards were tested in an effort to bridge the “digital divide”. To make WinterGames technology savvy, innovative scenarios were deployed on a trial basis in thepremises of the Beijing Organizing Committee for the 2022 Olympic and Paralympic
Winter Games, such as unmanned vending carts, automatic vending machines andunattended supermarkets. Wearable devices were developed, such as gloves, badges
and Olympic uniforms with payment functions. Most users participating in the pilot
tests agree that e-CNY can help improve payment efficiency and reduce costs. The
general public, micro and small vendors and enterprises acknowledge the convenienceand inclusiveness of e-CNY.

During the R&D and pilot, the PBOC extensively exchanged views with internationalorganizations (IOs) such as the Financial Stability Board, the Bank for International
Settlements (BIS), the International Monetary Fund and the World Bank. The PBOC
discussed cutting-edge issues on digital fiat currency with monetary and fiscal
authorities and regulators in various jurisdictions, multinational financial institutions,and top universities. It actively participated in setting standards for digital fiat
currency and building an international standard system under the framework of IOs.
The PBOC DCI has signed an MOU with the Hong Kong Monetary Authority. It has
also joined the Multiple CBDC Bridge (m-CBDC Bridge) led by the BIS Innovation
Hub (BISIH), where it explores CBDC options in joint efforts with BIS innovation
hub centers in Hong Kong Special Administrative Region and Singapore, as well as
relevant central banks.
5.2 Outlook
The PBOC will continue to prudently advance the pilot e-CNY R&D project in linewith China’s 14th Five-Year Plan, with no preset timetable for the final launch. Efforts
will focus on the following areas.
First, the PBOC will forge ahead with the pilot R&D project in a prudent andorderly manner. Building on the experience from the previous pilot tests and taking
into account the development plans and local circumstances of pilot places, the PBOC
will further expand test scenarios to cover all possible scenarios in selected pilot
regions. The PBOC will improve the e-CNY ecosystem, and continue to explore new
application models in line with economic and social development. In the meantime,
the PBOC will join hands with and tap the strengths of all relevant parties, including
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authorized operators, to improve pilot schemes based on practices and continuously
optimize the design of the e-CNY system.
Second, the PBOC will improve relevant institutional arrangements and rules.
We will actively advance the revision of laws and regulations, such as the Law on the
People’s Bank of China, and explore to formulate administrative measures on e-CNY
to enhance protection of personal information. The PBOC will improve the rulebook
and technical codes. Additionally, we will improve security management for thee-CNY operational system throughout the entire lifecycle of e-CNY, covering
password security, financial information security, data security and business continuity,
so as to ensure safe and stable functioning of the system.
Third, the PBOC will strengthen research on major issues. We will deepen our
analysis of e-CNY’s deep impact on monetary policy, financial system and financial
stability, in an effort to lay a solid theoretical and policy foundation for the R&D andpotential application of e-CNY. Meanwhile, the PBOC is willing to participate
actively in international exchanges of views on digital fiat currency and discuss
standards setting in an open and inclusive manner, in order to jointly advance thedevelopment of the international monetary system.

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