Document:

Exhibit 10.16

 

No.

 

Technical Maintenance Services Contract

 

Party A: Nanjing Culture and Artwork
Property Exchange Co., Ltd.

Address: No.1, Zixia East Road, Maqun
Street, Qixia District, Nanjing 

 

Party B: Nanjing Yanyu Information Technology
Co., Ltd.

Address: No. 530, Information New Materials
Industrial Park, Dongba Town, Nanjing, Jiangsu Province

 

In accordance with the Contract Law
of the People's Republic of China and through friendly consultations, regarding the technical maintenance services of the trading
system of Nanjing Culture and Artwork Property Exchange Co., Ltd, in the principle of equality and mutual consent, the parties
hereby agree as follows:

 

I Services

 

The services herein refer to the operation
and maintenance, technical support and other services provided by Party B for the application software developed by it for Party
A, mainly including:

 

1) Daily technical
support services: Consulting, analyzing and answering all kinds of questions encountered by Party A's personnel in the process
of using Party B's software, and helping Party A's personnel correctly use and maintain the relevant software system.

 

2) Application software
troubleshooting: Timely eliminating problems in the process of using the software system, and restoring the normal operation of
the system. Party B undertakes to remove any fault in the transaction process caused by the software system of Party B and restore
the normal operation of the system in time, without adversely affecting the completion of the transaction plan of Party A on the
same day.

 

3) Application software
upgrade: During the maintenance service period, in the process of using the application software, through friendly consultations
between Party A and Party B, Party B shall be responsible for software modification and upgrade of the existing system upon certain
new modifications or suggestions raised by Party A without making any major adjustments or changes to the entire system, in order
to meet the requirements of Party A.

 

     

      

    

 

II Service
Mode

 

Party B shall provide Party A with the
following service modes:

 

1) Hotline service:
Party B shall provide Party A with a hotline to ensure timely service provision.

 

2) Remote online services: When necessary,
Party B shall, with the consent of Party A, remotely log on to the system to provide daily inspection, system maintenance and troubleshooting
services for the system.

 

3) On-site services: If any maintenance
work or system failure cannot be solved remotely, Party B shall dispatch engineers to the site where the software server is located
as soon as possible to solve the problems as soon as possible.

 

4) Dedicated customer service
representative: Party B shall appoint dedicated customer service personnel who shall be fully responsible for service of
Party A and establish dedicated maintenance files to ensure that Party B's customer service personnel have a good
understanding of the previous and current situation of the system and improve the service quality.

 

III Working
Conditions and Collaboration Matters

 

1) During the system maintenance, Party
A shall designate relevant personnel to keep in touch with and cooperate with Party B to ensure that Party B can timely obtain
relevant information required for system maintenance.

 

2) When Party B needs to log in
the system remotely online for maintenance work, Party A shall promptly provide necessary login information and open
corresponding security settings to ensure that Party B can carry out remote maintenance smoothly.

 

3) When Party A requests Party B to
upgrade and modify the system software, it shall provide relevant written requests and necessary documents.

 

4) Party B shall keep strictly confidential
the relevant business data in Party A's system and shall not disclose the relevant data to any third party without Party A's prior
consent.

 

    2

      

    

 

IV Term
and Method of Performance

 

1) The service period
corresponding to this contract is 3 years, from July 1, 2018 to June 30, 2021; if Party A fails to give a written notice of termination
to Party B one month prior to the expiration of the service period, this agreement shall be automatically renewed for one year.

 

2) Upon execution
of the maintenance contract and receiving the corresponding maintenance fee from Party A pursuant to this contract, Party B shall
commerce performing the services set forth in the contract.

 

3) If Party A requires
Party B to continue to provide relevant technical maintenance services five working days prior to the expiration of the maintenance
service period, the maintenance fee shall be subject to further consultations between both parties.

 

V Compensation
and Payment Method

 

1) The fee for technical maintenance
services provided by Party B for Party A's trading system is RMB 12500/ month.

 

VI Account
details

 

Payee: Nanjing Yanyu Information Technology
Co., Ltd.

Deposit Bank: Ping An Bank Aoti Branch

Bank Account Number: 1500003708178

 

VII Dispute
resolution

 

All disputes arising from the performance
of this contract shall be resolved by both parties through friendly consultations. If no agreement can be reached through consultations,
either party has the right to bring a lawsuit to the people's court where Party B is located. In the course of dispute resolution,
this contract shall continue to be performed, except for the part under consultations or litigation.

 

    3

      

    

 

VIII Force
Majeure

 

If the continued performance of this
contract is rendered impossible due to war, earthquake, fire or flood, the affected party shall immediately notify the other party
of the event. In case of breach of contract caused by force majeure, the affected party may be exempted from all or part of the
liability for breach of contract depending upon the extent of effects of force majeure on the performance of the contract. 

 

IX Others

 

This contract is made in quadruplicate,
two copies for each party. This contract shall come into force upon signature and seal by both parties.

 

The following is intentionally left
blank and the signature page follows. 

 

Party A: Nanjing Culture and Artwork
Property Exchange Co., Ltd (Sale)

 

Signature of representative:

 

Date: July 1, 2018 

 

Party B: Nanjing Yanyu Information Technology
Co., Ltd.

 

Signature of representative:

 

Date: July 1, 2018

 

 

4Exhibit 10.17

 

No.

 

Technical
Maintenance Services Contract

 

Party A: Jinling Cultural Property
Rights Exchange Co., Ltd

Address:
7/F, Building 5, #18, Jialingjiang East Street, Jianye District, Nanjing

 

Party
B: Nanjing Yanyu Information Technology Co., Ltd.

Address:
No. 530, Information New Materials Industrial Park, Dongba Town, Nanjing, Jiangsu Province

 

In accordance with the Contract Law
of the People's Republic of China and through friendly consultations, regarding the technical maintenance services of the trading
system of Jinling Cultural Property Rights Exchange Co., Ltd, in the principle of equality and mutual consent, the parties hereby
agree as follows:

 

		I	Services

 

The
services herein refer to the operation and maintenance, technical support and other services provided by Party B for the application
software developed by it for Party A, mainly including:

 

1)
Daily technical support services: Consulting, analyzing and answering all kinds of questions encountered by Party A’s personnel
in the process of using Party B’s software, and helping Party A’s personnel correctly use and maintain the relevant software system.

 

2)
Application software troubleshooting: Timely eliminating problems in the process of using the software system, and restoring the
normal operation of the system. Party B undertakes to remove any fault in the transaction process caused by the software system
of Party B and restore the normal operation of the system in time, without adversely affecting the completion of the transaction
plan of Party A on the same day.

 

3)
Application software upgrade: During the maintenance service period, in the process of using the application software, through
friendly consultations between Party A and Party B, Party B shall be responsible for software modification and upgrade of the
existing system upon certain new modifications or suggestions raised by Party A without making any major adjustments or changes
to the entire system, in order to meet the requirements of Party A.

 

     

     

    

 

		II	Service
Mode

 

Party
B shall provide Party A with the following service modes:

 

1)
Hotline service: Party B shall provide Party A with a hotline to ensure timely service provision.

 

2)
Remote online services: When necessary, Party B shall, with the consent of Party A, remotely log on to the system to provide daily
inspection, system maintenance and troubleshooting services for the system.

 

3)
On-site services: If any maintenance work or system failure cannot be solved remotely, Party B shall dispatch engineers to the
site where the software server is located as soon as possible to solve the problems as soon as possible.

 

4)Dedicated
customer service representative: Party B shall appoint dedicated customer service personnel who shall be fully responsible for
service of Party A and establish dedicated maintenance files to ensure that Party B’s customer service personnel have a good understanding
of the previous and current situation of the system and improve the service quality.

 

		III	Working
Conditions and Collaboration Matters

 

1)
During the system maintenance, Party A shall designate relevant personnel to keep in touch with and cooperate with Party B to
ensure that Party B can timely obtain relevant information required for system maintenance.

 

2)When
Party B needs to log in the system remotely online for maintenance work, Party A shall promptly provide necessary login information
and open corresponding security settings to ensure that Party B can carry out remote maintenance smoothly.

 

3)
When Party A requests Party B to upgrade and modify the system software, it shall provide relevant written requests and necessary
documents.

 

4)
Party B shall keep strictly confidential the relevant business data in Party A’s system and shall not disclose the relevant data
to any third party without Party A’s prior consent.

 

    2

     

    

 

		IV	Term
and Method of Performance

 

1)
The service period corresponding to this contract is 3 years, from July 1, 2018 to June 30, 2021; if Party A fails to give a written
notice of termination to Party B one month prior to the expiration of the service period, this agreement shall be automatically
renewed for one year.

 

2)
Upon execution of the maintenance contract and receiving the corresponding maintenance fee from Party A pursuant to this contract,
Party B shall commerce performing the services set forth in the contract.

 

3)
If Party A requires Party B to continue to provide relevant technical maintenance services five working days prior to the expiration
of the maintenance service period, the maintenance fee shall be subject to further consultations between both parties.

 

		V	Compensation
and Payment Method

 

1)
The fee for technical maintenance services provided by Party B for Party A’s trading system is RMB 12500/ month.

 

2)
Party A shall pay Party B the service fee for the first month in full within 5 working days of execution of this contract, i.e.,
RMB 12500 Yuan (say RMB twelve thousand five hundred Yuan only). 

 

		VI	Account
details

 

Payee:
Nanjing Yanyu Information Technology Co., Ltd.

Deposit
Bank: Ping An Bank Aoti Branch

Bank Account Number: 

 

		VII	Dispute
resolution

 

All
disputes arising from the performance of this contract shall be resolved by both parties through friendly consultations. If no
agreement can be reached through consultations, either party has the right to bring a lawsuit to the people’s court where Party
B is located. In the course of dispute resolution, this contract shall continue to be performed, except for the part under consultations
or litigation.

 

    3

     

    

 

		VIII 	Force
Majeure

 

If
the continued performance of this contract is rendered impossible due to war, earthquake, fire or flood, the affected party shall
immediately notify the other party of the event. In case of breach of contract caused by force majeure, the affected party may
be exempted from all or part of the liability for breach of contract depending upon the extent of effects of force majeure on
the performance of the contract. 

 

		IX	Others

 

This
contract is made in quadruplicate, two copies for each party. This contract shall come into force upon signature and seal by both
parties.

 

The
following is intentionally left blank and the signature page follows. 

 

Party A: Jinling Cultural Property
Rights Exchange Co., Ltd (Seal)

 

Signature
of representative:

 

Date:

 

Party
B: Nanjing Yanyu Information Technology Co., Ltd.(Seal)

 

Signature
of representative: Ding Wenyong

 

Date:
October 1, 2018

 

 

4

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