CHYY Development Group Limited — Report Publication Announcement 2016

Aug 19, 2016

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

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(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 8128)

FURTHER DELAY IN DESPATCH OF CIRCULAR IN RELATION TO CONTINUING CONNECTED TRANSACTION

Reference is made to the announcement of China Ground Source Energy Industry Group Limited (the “ Company ”) dated 4 May 2016 in connection with the Continuing Connected Transaction and announcements of the Company dated 25 May 2016, 24 June 2016, 8 July 2016, 22 July 2016 and 5 August 2016 in relation to delay in despatch of a circular (the “ Circular ”) in relation to the Continuing Connected Transaction (collectively, the “ Announcements ”). Unless otherwise defined, capitalised terms used in this announcement shall have the same meanings as those defined in the Announcements.

As disclosed in the announcement of the Company dated 5 August 2016, the Circular would be despatched to the Shareholders on or before 19 August 2016. However, as additional time is required for the Company to finalise certain information in the Circular, the despatch date of the Circular to the Shareholders is expected to be postponed to a date falling on or before 31 August 2016.

By order of the Board China Ground Source Energy Industry Group Limited Wong Lai Yuk

Company Secretary

Hong Kong, 19 August 2016

As at the date of this announcement, the Board comprises Mr. Liu Dajun, Mr. Xu Shengheng, Ms. Chan Wai Kay, Katherine and Mr. Zang Yiran as executive Directors, Mr. Zhao Youmin and Mr. Daiqi as non-executive Directors, Mr. Jia Wenzeng, Mr. Wu Desheng and Mr. Zhang Honghai as independent non-executive Directors.

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This announcement, for which the Directors collectively and individually accept full responsibility, includes particulars given in compliance with the Rules Governing the Listing of Securities on the Growth Enterprise Market of The Stock Exchange of Hong Kong Limited for the purpose of giving information with regard to the Company. The Directors, having made all reasonable enquiries, confirm that to the best of their knowledge and belief the information contained in this announcement is accurate and complete in all material respects and not misleading or deceptive, and there are no other matters the omission of which would make any statement herein or this announcement misleading.

This announcement will remain on the GEM at www.hkgem.com on the “Latest Company Announcement” page for at least 7 days from the date of publication and on the website of the Company at www.cgsenergy.com.hk.

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