UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, 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 ended April 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)

2451 NW 109 Avenue, Suite 9, Miami, FL 33712
Tel: 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):

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

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.

2

TABLE OF CONTENTS

3

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.

4

None

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.

None.

5

PART IV

* Filed herewith.

6

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

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.

7