CHYY Development Group Limited — Proxy Solicitation & Information Statement 2026

Jun 2, 2026

中國恒有源發展集團有限公司
CHYY DEVELOPMENT GROUP LIMITED
(Incorporated in the Cayman Islands with limited liability)
(Stock Code: 8128)

ANNUAL GENERAL MEETING

FORM OF PROXY

I/We, (Name) (note 1)
of (Address)
being the holder(s) of (note 2) shares of par value US$0.01 each in the share capital of CHYY DEVELOPMENT GROUP LIMITED (the “Company”), HEREBY APPOINT (Name) (note 3)
of (Address)
or the Chairman of the Annual General Meeting (the “Meeting”) (note 4) to act as my/our proxy/proxies at the Meeting (and at any adjournment thereof) to be held at 8/F., Chung Hing Commercial Building, 62-63 Connaught Road Central, Central, Hong Kong on Friday, 26 June 2026 at 11:00 a.m. for the purposes of considering and, if thought fit, passing the resolutions set out in the notice convening the Meeting, and at such Meeting (and at any adjournment thereof) to vote for me/us and in my/our name(s) in respect of the resolutions as hereunder indicated.

ORDINARY RESOLUTIONS		FOR (note 5)	AGAINST (note 5)
1.	To receive and consider the audited financial statements of the Company for the year ended 31 December 2025 together with the reports of the directors of the Company (the “Directors”) and auditors of the Company thereon.
2.	(a) To re-elect Mr. Xu Shengheng as executive Director and to authorise the board of Directors to fix his remuneration.
	(b) To re-elect Mr. Dai Qi as executive Director and to authorise the board of Directors to fix his remuneration.
	(c) To re-elect Mr. Liao Yuan as non-executive Director and to authorise the board of Directors to fix his remuneration.
3.	To re-appoint auditors of the Company and to authorise the board of Directors to fix their remuneration.
4.	A. To pass the ordinary resolution no. 4A set out in the notice of the Meeting in respect of the general and resale mandate.
	B. To pass the ordinary resolution no. 4B set out in the notice of the Meeting in respect of the repurchase mandate.
	C. To pass the ordinary resolution no. 4C set out in the notice of the Meeting in respect of the extension of the general and resale mandate.
SPECIAL RESOLUTION		FOR (note 5)	AGAINST (note 5)
5.	To pass the special resolution no. 5 set out in the notice of the Meeting in respect of the Proposed Change of Company Name.

Signature (note 8)
Dated this __ day of __, 2026

Notes:

1. Full name(s) and address(es) are to be inserted in BLOCK CAPITALS. The names of all joint holders should be stated. Only one of the joint holders needs to sign (but see note 7 below).
2. Please insert the number of shares of the Company to which this form of proxy relates. If no number is inserted, this form of proxy will be deemed to relate to all the shares of the Company registered in your name(s).
3. A member of the Company may appoint one (or, if he/she/it holds two or more Shares, more than one) proxy of his/her/its own choice. The proxy need not be a member of the Company but must attend the meeting in person to represent you.
4. If any proxy other than the Chairman of the Meeting is preferred, delete the words “or the Chairman of the Meeting” and insert the name and address of the proxy desired in the space provided in BLOCK CAPITALS. If no name is inserted, the duly appointed Chairman of the Meeting will act as your proxy.
5. IMPORTANT: IF YOU WISH TO VOTE FOR A RESOLUTION, PLEASE TICK (“√”) THE BOX MARKED “FOR”. IF YOU WISH TO VOTE AGAINST A RESOLUTION, PLEASE TICK (“√”) THE BOX MARKED “AGAINST”. Failure to complete the box will entitle your proxy to cast his votes at his discretion. A proxy will also be entitled to vote at his direction on any resolution properly put to the Meeting other than those set out in the notice convening the Meeting.
6. In order to be valid, this form of proxy, together with the power of attorney or other authority (if any) under which the form is signed, or a certified copy of such power of attorney or authority, must be deposited at the Company's branch share registrar in Hong Kong, Computershare Hong Kong Investor Services Limited at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong not less than 48 hours before the time fixed for the holding of the Meeting or any adjournment thereof.
7. Where there are joint holders of any shares of the Company, any one of such persons may vote at the Meeting, either personally or by proxy, in respect of such shares of the Company as if he were solely entitled thereto, and if more than one of such joint holders is present at the Meeting, either personally or by proxy, the joint holder whose name stands first on the register of members of the Company in respect of the relevant joint holding shall alone be entitled to vote.
8. This form of proxy must be signed by you or your attorney duly authorised in writing or, if you are a corporation, must either be executed under seal or under the hand of an officer, attorney or other person duly authorised.
9. Completion and return of the form of proxy will not preclude you from attending and voting in person at the Meeting and in such event, the form of proxy shall be deemed to be revoked.
10. ANY ALTERATION MADE TO THIS FORM OF PROXY MUST BE INITIALLED BY THE PERSON(S) WHO SIGN(S) IT.

PERSONAL INFORMATION COLLECTION STATEMENT

(i) “Personal Data” in these statements has the same meaning as “personal data” in the Personal Data (Privacy) Ordinance, Chapter 486 of the Laws of Hong Kong (“PDPO”).
(ii) Your supply of Personal Data to the Company is on a voluntary basis. Failure to provide sufficient information, the Company may not be able to process your appointment of proxy and instructions.
(iii) Your Personal Data may be disclosed or transferred by the Company to its subsidiaries, its share registrars, and/or other companies or bodies for any of the stated purposes, and retained for such period as may be necessary for our verification and record purposes.
(iv) You have the right to request access to and/or correction of your Personal Data in accordance with the provisions of the PDPO. Any such request for access to and/or correction of your Personal Data should be in writing by mail to the Company/Computershare Hong Kong Investor Services Limited at the above address.