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UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C.
20549

AMENDMENT NO.1 TO

FORM 10-K

[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

For the fiscal year endedApril 30, 2015

[   ] TRANSITION REPORT PURSUANT TO SECTION 13 OR
15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ___________to ___________

Commission file number 333-174607

JOYMAIN INTERNATIONAL DEVELOPMENT GROUP
INC.(Exact name of registrant as
specified in its charter)

|Nevada                   | 5070                        | 68-0681552           
|------------------------ | --------------------------- | ---------------------
|State or jurisdiction of | Primary Standard Industrial | IRS Employer         
|incorporation            | Classification Code Number  | Identification Number
|or organization          |                             |                      

2451 NW 109 Avenue, Suite 9, Miami, FL 33712Tel: 1-786-232-3083(Address, including zip
code, and telephone number,including area code, of registrants
principal executive offices)

Securities registered pursuant to Section 12(b) of the Act:
None

Securities registered pursuant to Section 12(g) of the Act:
None

Indicate by check mark whether the registrant is a well-known
seasoned issuer, as defined in Rule 405 of the Securities Act.Yes [ 
 ]     No [X]

Indicate by check mark if the registrant is not required to
file reports pursuant to Section 13 or Section 15(d) of the Act.Yes
[   ]     No [X]

Indicate by check mark whether the registrant (1) has filed all
reports required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for shorter period that the
registrant as required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.Yes [X]     No
[   ]

Indicate by check mark whether the registrant has submitted
electronically and posted on its corporate Website, if any, every Interactive
Data File required to be submitted and posted pursuant to Rule 405 of Regulation
S-K (§229.405 of this chapter) during the preceding 12 months (or for such
shorter period that the registrant was required to submit and post such files).
Yes [X]     No [   ]

Indicate by check mark if disclosure of delinquent filers
pursuant to Item 405 of Regulation S-K is not contained herein, and will not be
contained, to the best of registrant's knowledge, in definitive proxy or
information statements incorporated by reference in Part III of this Form 10-K
or any amendment to this Form 10-K. [   ]

Indicate by check mark whether the registrant is a large
accelerated filer, an accelerated filer, or a non-accelerated filer. See
definition of "accelerated filer and large accelerated filer" in Rule 12b-2 of
the Exchange Act. (Check one):

|Large accelerated filer [   ] | Accelerated filer [   ]      
|----------------------------- | -----------------------------
|Non-accelerated filer [   ]   | Smaller reporting company [X]

Indicate by check mark whether the registrant is a shell
company (as defined in Rule 12b-2 of the Act) Yes [  
]     No [X]

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The aggregate market value of Common Stock held by
non-affiliates of the Registrant on October 31, 2014 was Nil based on a Nil
average bid and asked price of such common equity, as of the last business day
of the registrants most recently completed second fiscal quarter.

As of August 12, 2015, the registrant had 1,120,343,373 shares
of common stock issued and outstanding.

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TABLE OF CONTENTS

|ITEM
    9. | CHANGES IN
      AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL
    DISCLOSURE | 5
|----------- | ---------------------------------------------------------------------------------------------- | -
|ITEM 9A.    | CONTROLS AND
    PROCEDURES                                                                    | 5
|ITEM 9B.    | OTHER INFORMATION                                                                              | 6
|ITEM 15.    | EXHIBITS, FINANCIAL STATEMENT SCHEDULES                                                        | 7

3

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EXPLANATORY NOTE

This amendment No. 1 to Annual Report on Form 10-K (this
Amendment) is being filed to incorporate changes to the Annual Report on Form
10-K filed by the Company on August 13, 2015 (the Form 10-K) in response to
comments received from the Securities and Exchange Commission (the Commission)
as a result of the Commissions review of the Form 10-K. Unless otherwise
disclosed herein, the disclosures contained herein have not been updated to
reflect events, results or developments that have occurred after the original
filing of Form 10-K, or to modify or update those disclosures affected by
subsequent events unless otherwise indicated in this report. This Amendment
should be read in conjunction with the Form 10-K and the Companys filings made
with the Commission subsequent to the Form 10-K, including any amendments to
those filings.

INTRODUCTORY NOTE

Except as otherwise indicated by the context, references in
this Annual Report on Form 10-K (this Form 10-K) to the Company, we, us
or our are references to the combined business of Joymain International
Development Group Inc. (formerly known as Advento Inc.). References to China
or PRC are references to the Peoples Republic of China. References to RMB
are to Renminbi, the legal currency of China, and all references to $ and
dollar are to the U.S. dollar, the legal currency of the United States. In this
Form 10-K, unless otherwise specified, all dollar amounts are expressed in
United States dollars and all references to common shares refer to the common
shares in our capital stock.

Special Note Regarding Forward-Looking Statements

This report contains forward-looking statements and information
that are based on the beliefs of our management as well as assumptions made by
and information currently available to us. Such statements should not be unduly
relied upon. When used in this report, forward-looking statements include, but
are not limited to, the words anticipate, believe, estimate, expect,
intend, plan and similar expressions, as well as statements regarding new
and existing products, technologies and opportunities, statements regarding
market and industry segment growth and demand and acceptance of new and existing
products, any projections of sales, earnings, revenue, margins or other
financial items, any statements of the plans, strategies and objectives of
management for future operations, any statements regarding future economic
conditions or performance, uncertainties related to conducting business in
China, any statements of belief or intention, and any statements or assumptions
underlying any of the foregoing. These statements reflect our current view
concerning future events and are subject to risks, uncertainties and
assumptions. There are important factors that could cause actual results to vary
materially from those described in this report as anticipated,
estimated or expected, including, but not limited to: competition in the
industry in which we operate and the impact of such competition on pricing,
revenues and margins, volatility in the securities market due to the general
economic downturn; Securities and Exchange Commission (the SEC) regulations
which affect trading in the securities of penny stocks, and other risks and
uncertainties. Except as required by law, we assume no obligation to update any
forward-looking statements publicly, or to update the reasons actual results
could differ materially from those anticipated in any forward- looking
statements, even if new information becomes available in the future. Depending
on the market for our stock and other conditional tests, a specific safe harbor
under the Private Securities Litigation Reform Act of 1995 may be available.
Notwithstanding the above, Section 27A of the Securities Act of 1933, as amended
(the Securities Act) and Section 21E of the Securities Exchange Act of 1934,
as amended (the Exchange Act) expressly state that the safe harbor for
forward-looking statements does not apply to companies that issue penny stock.
Because we may from time to time be considered to be an issuer of penny stock,
the safe harbor for forward-looking statements may not apply to us at certain
times.

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|ITEM 9. | CHANGES IN AND DISAGREEMENTS WITH
      ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
|------- | ------------------------------------------------------------------------------------------

None

|ITEM 9A. | CONTROLS AND PROCEDURES
|-------- | -----------------------

Evaluation of Disclosure Controls and Procedures

An evaluation was conducted under the supervision and with the
participation of our management, including Mr. Suqun Lin, our president and our
principal executive officer, and Mr. Chengjie He, our principal financial
officer and principal accounting officer (collectively, the Certifying
Officers), of the effectiveness of the design and operation of our disclosure
controls and procedures as of April 30, 2015. Based on that evaluation, our
management concluded that our disclosure controls and procedures were not
effective as of such date to ensure that information required to be disclosed in
the reports that we file or submit under the Exchange Act, is recorded,
processed, summarized and reported within the time periods specified in SEC
rules and forms. We maintain "disclosure controls and procedures," as such term
is defined in Rule 13a-15(e) under the Securities Exchange Act of 1934 (the
"Exchange Act"), that are designed to ensure that information required to be
disclosed in our Exchange Act reports is recorded, processed, summarized and
reported within the time periods specified in the Securities and Exchange
Commission rules and forms, and that such information is accumulated and
communicated to our management, including Certifying Officers, as appropriate,
to allow timely decisions regarding required disclosure. We conducted an
evaluation, under the supervision and with the participation of Certifying
Officers of the effectiveness of the design and operation of our disclosure controls and procedures as of the end of the
period covered by this report pursuant to Rule 13a-15 of the Exchange Act. The
evaluation of our disclosure controls and procedures included a review of the
disclosure controls' and procedures' objectives, design, implementation and the
effect of the controls and procedures on the information generated for use in
this report. In the course of our evaluation, we sought to identify data errors,
control problems or acts of fraud and to confirm the appropriate corrective
actions, if any, including process improvements, were being undertaken. Our
management concluded that, as of the end of the period covered by this annual
report, our disclosure controls and procedures were not effective.

Management Report on Internal Control Over Financial
Reporting

Our management is responsible for establishing and maintaining
adequate internal control over financial reporting to provide reasonable
assurance regarding the reliability of our financial reporting and the
preparation of consolidated financial statements for external purposes in
accordance with U.S. generally accepted accounting principles. Internal control
over financial reporting includes but not limits to those policies and
procedures that (i) pertain to the maintenance of records that in reasonable
detail accurately and fairly reflect the transactions and dispositions of the
assets of the Company; (ii) provide reasonable assurance that transactions are
recorded as necessary to permit preparation of consolidated financial statements
in accordance with U.S. generally accepted accounting principles, and that
receipts and expenditures of the Company are being made only in accordance with
authorizations of management and directors of the Company; and (iii) provide
reasonable assurance regarding prevention or timely detection of unauthorized
acquisition, use, or disposition of the Companys assets that could have a
material effect on the consolidated financial statements.

Any system of internal control, no matter how well designed,
has inherent limitations, including the possibility that a control can be
circumvented or overridden and misstatements due to error or fraud may occur and
not be detected in a timely manner. Also, because of changes in conditions,
internal control effectiveness may vary over time. Accordingly, even an
effective system of internal control will provide only reasonable assurance with
respect to consolidated financial statement preparation. In addition, the design
of any system of controls is based in part on certain assumptions about the
likelihood of future events, and there can be no assurance that any design will
succeed in achieving its stated goals under all potential future conditions.
Over time, controls may become inadequate because of changes in conditions or
deterioration in the degree of compliance with policies or procedures.
Therefore, any current evaluation of controls cannot and should not be projected
to future periods.

Management assessed our internal control over financial
reporting as of the year ended April 30, 2015. In making this assessment,
management used the criteria set forth by the Committee of Sponsoring
Organizations of the Treadway Commission (COSO) in 2013 Internal
Control-Integrated Framework. The 2013 COSO framework summarizes each of the
components of a companys internal control system, including (i) the control
environment, (ii) risk assessment, (iii) control activities, (iv) information
and communication, and (v) monitoring.

Based on managements assessment using the 2013 COSO framework,
management identified a material weakness over financial reporting consisting of
1) insufficient accounting staff which results in a lack of segregation of duties necessary for an
efficient internal control system; and 2) insufficient documentation with our
existing risk assessment and internal controls, existed as of April 30, 2015. As
a result, management has concluded that the Companys internal control over
financial reporting was not effective as of April 30, 2015 to provide reasonable
assurance regarding the reliability of financial reporting and the preparation
of consolidated financial statements for external reporting purposes in
accordance with U.S. generally accepted accounting principles.

A material weakness (within the meaning of PCAOB Auditing
Standard No. 5) is a deficiency, or a combination of deficiencies, in internal
control over financial reporting, such that there is a reasonable possibility
that a material misstatement of our annual or interim financial statements will
not be prevented or detected on a timely basis. A significant deficiency is a
deficiency, or a combination of deficiencies, in internal control over financial
reporting that is less severe than a material weakness, yet important enough to
merit attention by those responsible for oversight of the companys financial
reporting.

In light of this significant deficiency, management performed
additional analyses and procedures in order to conclude that our consolidated
financial statements for the year ended April 30, 2015 included in this Annual
Report on Form 10-K were fairly stated in accordance with GAAP. Accordingly,
management believes that despite our significant deficiency, our consolidated
financial statements for the year ended April 30, 2015 are fairly stated, in all
material respects, in accordance with GAAP.

Due to our size and nature, segregation of all conflicting
duties may not always be possible and may not be economically feasible. As a
result, we have not been able to take steps to improve our internal controls
over financial reporting during the year ended April 30, 2015. However, to the
extent possible, we continue to evaluate the effectiveness of internal controls
and procedures on an on-going basis. Once our cash flows from operations improve
to a level where we are able to hire additional personnel in financial
reporting, we plan to improve our internal controls and procedures by hiring an
experienced controller and building an internal accounting team with sufficient
in-house expertise in US GAAP reporting. However, due to the limited cash flow
we are currently having, we can not assure you when we will be able to implement
those remediation methods.

Auditor Attestation

This annual report does not include an attestation report of
our registered public accounting firm regarding internal control over financial
reporting. Managements report was not subject to attestation by our registered
public accounting firm pursuant to rules of the Securities and Exchange
Commission that permit us to provide only managements report in this annual
report.

Changes in Internal Control over Financial Reporting

There has been no change in our internal control over financial
reporting identified in connection with our evaluation we conducted of the
effectiveness of our internal control over financial reporting as of April 30, 2015, that occurred during our fourth
fiscal quarter that has materially affected, or is reasonably likely to
materially affect, our internal control over financial reporting.

|ITEM 9B. | OTHER INFORMATION
|-------- | -----------------

None.

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PART IV

|ITEM 15. | EXHIBITS, FINANCIAL STATEMENT SCHEDULES
|-------- | ---------------------------------------

|(a) | Financial Statements, incorporated by reference to the
      Form 10-K filed on August 23, 2015
|--- | -----------------------------------------------------------------------------------------------
|    |                                                                                                
|(b) | Exhibits                                                                                       

|Exhibit | Description                                                                                                                                                                           
|------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Number  |                                                                                                                                                                                       
|(3)     | (i) Articles of
      Incorporation; (ii) Bylaws                                                                                                                                      
|3.1     | Articles of Incorporation (incorporated by
      reference to our Registration Statement on Form S-1 filed on May 31, 2011)                                                           
|3.2     | Bylaws (incorporated by
      reference to our Registration Statement on Form S-1 filed on May 31, 2011)                                                                              
|3.3     | Certificate of Amendment (incorporated by
      reference to our Current Report on Form 8- K filed on April 11, 2013)                                                                 
|(10)    | Material Contracts                                                                                                                                                                    
|10.1    | Consultant Agreement between the Company and LP
      Funding, LLC dated May 10, 2014 (incorporated by reference to our Current
      Report on Form 10-Q filed on September 12, 2014)
|(31)    | Rule 13a-14(a) / 15d-14(a)
      Certifications                                                                                                                                       
|31.1*   | Certification pursuant to Section 302 of the
      Sarbanes-Oxley Act of 2002 of the Principal Executive Officer                                                                      
|31.2*   | Certification pursuant to
      Section 302 of the Sarbanes-Oxley Act of 2002 of the Principal Financial
      Officer and Principal Accounting Officer                               
|(32)    | Section 1350 Certifications                                                                                                                                                           
|32.1*   | Certification pursuant to
      Section 906 of the Sarbanes-Oxley Act of 2002 of the Principal Executive
      Officer, Principal Financial Officer and Principal Accounting Officer  

* Filed herewith.

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SIGNATURES

In accordance with Section 13 or 15(d) of the Exchange Act, the
registrant caused this Amendment No. 1 to Form 10-K to be signed on its behalf
by the undersigned, thereunto duly authorized

|                       | Joymain International Development Group Inc.
|---------------------- | --------------------------------------------
|                       |                                             
|Dated: January 8, 2016 | By: /s/ Suqun Lin                           
|                       | Suqun Lin                                   
|                       | President, Chief Executive Officer,         
|                       | Secretary and Director                      

Pursuant to the requirements of the Securities Exchange Act of
1934, this report has been signed below by the following persons on behalf of
the registrant and in the capacities and on the dates indicated. Each person
whose signature appears below hereby authorizes Suqun Lin as his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution
for him or her and in his or her name, place and stead, in any and all
capacities to sign any and all amendments to this report, and to file the same,
with all exhibits thereto and other documents in connection therewith, with the
Securities and Exchange Commission.

Signature
    
    Title
    
    Date/s/ Suqun Lin
    
    President, Chief Executive Officer
    
    January 8, 2016Suqun Lin
    
    Secretary and Director/s/ Chengjie He
    
    Chief Financial Officer and Treasurer
    
    January 8, 2016Chengjie He
    
    ( Principal Accounting Officer)/s/Jian ShaoJian Shao
    
    Chief Business Development Officer
    
    January 8, 2016


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