CHYY Development Group Limited — AGM Information 2017

May 19, 2017

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this notice, 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 notice.

==> picture [397 x 60] intentionally omitted <==

(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 8128)

NOTICE OF EXTRAORDINARY GENERAL MEETING

NOTICE IS HEREBY GIVEN that an extraordinary general meeting (the “ EGM ”) of China Ground Source Energy Industry Group Limited (the “ Company ”) will be held at Unit 3709-10, 37/F, The Center, 99 Queen’s Road Central, Central, Hong Kong on Tuesday, 13 June 2017 at 11:00 a.m. for the purposes of considering and, if thought fit, passing, with or without modification, the following resolutions as ordinary resolutions of the Company:

ORDINARY RESOLUTIONS

1. To re-elect Mr. An Yi as executive Director, Mr. Wu Qiang and Mr. Guo Qingui as independent non-executive Director and to authorise the board of Directors to fix their remuneration.

2. To consider and, if thought fit, to pass the following resolution as ordinary resolution:

“ THAT the Whitewash Waiver (as defined in the circular dated 19 May 2017 of the Company (the “ Circular ”)) granted by the Executive (as defined in the Circular) pursuant to Note 1 on dispensations from Rule 26 of the Takeovers Code (as defined in the Circular) waiving any obligation (either unconditionally or subject to such conditions as may be required by the Executive) on the part of CECEP (Hong Kong), to make a mandatory general offer (arising as a result of the subscription of Underwritten Shares (as defined in the Circular) pursuant to the Underwriting Agreement (as defined in the Circular) and/or pursuant to any application for any excess Rights Shares accepted by the Company) for all the issued shares of the Company and cancel all outstanding options of the Company not already owned, controlled or agreed to be acquired by CECEP (Hong Kong) and the parties acting in concert with it, be and is hereby approved, and any one or more Directors be and is/are hereby authorised to take such actions, do all such acts and things and execute all such further documents or deeds as he/she/they may, in his/her/their absolute discretion, consider necessary, appropriate, desirable or expedient for

• 1 -

the purpose of, or in connection with, the implementation of or giving effect to or the completion of any matters relating to the Whitewash Waiver and the transactions contemplated thereunder.”

Yours faithfully, For and on behalf of China Ground Source Energy Industry Group Limited Xu Shengheng

Joint Chairman & Executive Director

Hong Kong, 19 May 2017

Notes:

1. A member entitled to attend and vote at the EGM is entitled to appoint one or more proxies to attend and, in the event of a poll, vote instead of him. A proxy need not be a member of the Company.

2. To be valid, a form of proxy, together with the power of attorney or other authority (if any) under which it is signed (or a notarially certified copy thereof) must be deposited at the Company’s branch share registrar in Hong Kong, Computershare Hong Kong Investor Services Limited at Shops 1712-1716, 17th Floor, Hopewell Centre, 183 Queen’s Road East, Hong Kong not less than 48 hours before the time fixed for the holding of the EGM or any adjournment thereof.

3. Completion and return of the form of proxy will not preclude a member from attending and voting in person at the EGM and in such event, the form of proxy shall be deemed to be revoked.

4. The register of members of the Company will be closed from Wednesday, 7 June 2017 to Tuesday, 13 June 2017, both days inclusive, during which period no transfer of shares of the Company can be registered. All transfer documents accompanied by the relevant share certificates must be lodged with the Company’s branch share registrar and transfer office in Hong Kong, Computershare Hong Kong Investor Services Limited at Shops 1712-1716, 17th Floor, Hopewell Centre, 183 Queen’s Road East, Hong Kong not later than 4:30 p.m. on Tuesday, 6 June 2017.

• 2 -

As at the date of this notice, the Board comprises Mr. An Yi, Mr. Xu Shengheng, Ms. Chan Wai Kay, Katherine, Mr. Wang Manquan, Mr. Zang Yiran and Mr. Dai Qi as executive Directors, Mr. Zhao Youmin as non-executive Director, Mr. Jia Wenzeng, Mr. Wu Desheng, Mr. Wu Qiang and Mr. Guo Qingui as independent non-executive Directors

This notice, 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 notice 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 notice misleading.

This notice 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.

• 3 -