Hong Kong Exchanges and Clearing : Letter to Existing Registered Shareholders - Notice of Publication of 2020 Annual Report, Circular dated 17 March 2021 together with Notice of Annual General Meeting, Proxy Form and 2020 Corporate Social Responsibility Report

(Stock Code: 388)

17 March 2021

Dear Shareholder

Hong Kong Exchanges and Clearing Limited ("HKEX") Letter to Existing Registered Shareholders - Notice of Publication of 2020 Annual Report, Circular dated 17 March 2021 together with Notice of

Annual General Meeting, and Proxy Form (collectively "Current Corporate Communications") and 2020 Corporate Social Responsibility Report

The English and Chinese versions of the Current Corporate Communications are available in the Investor Relations (Regulatory Disclosure) section of the HKEX Group website(www.hkexgroup.com)and you can access the relevant documents under the sub-sections titled "Regulatory Reports" and "Circulars and Listing Documents" thereon. The documents are also available on the HKEXnews website(www.hkexnews.hk). If you have elected to receive the Corporate Communications (Note) in printed form, the printed copies of the Current Corporate Communications in your selected language(s) are enclosed.

If you wish to (a) receive the Current Corporate Communications in printed form or in a language version other than your existing choice; and/or (b) change your choice of language or means of receipt of all future Corporate Communications, please complete, sign and return the enclosed request form to HKEX's registrar, Hong Kong Registrars Limited by post (using the mailing label at the bottom of the request form) or by email [e-mail].

You may at any time change your choice of language or means of receipt of all future Corporate Communications by giving not less than seven days' notice in writing to Hong Kong Registrars Limited (by post to 17M Floor, Hopewell Centre, 183 Queen's Road East, Wan Chai, Hong Kong or by email [e-mail]). Even if you have elected (or are deemed to have elected) to access the Corporate Communications by electronic means through the HKEX Group website ("Electronic Version") but for any reason have difficulty in accessing the relevant Corporate Communications electronically, or wish to receive printed copies, HKEX will promptly upon your request send the printed copies to you free of charge.

HKEX's 2020 Corporate Social Responsibility Report is published in electronic form only under the Corporate Social Responsibility (CSR Reports) section of the HKEX Group website(www.hkexgroup.com). If you wish to receive a printed copy of HKEX's 2020 Corporate Social Responsibility Report, you may submit your request to Hong Kong Registrars Limited by post at the above address or by email [e-mail].

You are encouraged to elect the Electronic Version to help protect the environment, and we believe that it is the most prompt, efficient and convenient method of communication with Shareholders. Whenever a Shareholder elects the Electronic Version, HKEX will donate HK$50 to a charity with a focus on environmental protection, subject to a cap of HK$100,000 per annum.

Should you have any queries in relation to this letter, please call the enquiry hotline of HKEX's registrar on

(852) 2862 8688 during business hours (9:00 am to 6:00 pm, Monday to Friday, excluding Hong Kong public holidays).

Yours faithfully

David Fu

Group Company Secretary

Encl.

Note: Corporate Communication refers to any document issued or to be issued by HKEX for the information or action of holders of any of its securities, including, but not limited to, the directors' report and annual accounts together with a copy of the auditor's report, the interim report, a notice of meeting, a listing document, a circular and a proxy form.

HKXH-17032021-1(7)

CCS8234

HKXH

Shareholder's information (English Name and Address)

(Stock Code: 388)

Request Form

To: Hong Kong Exchanges and Clearing Limited ("HKEX")

c/o Hong Kong Registrars Limited

17M Floor, Hopewell Centre, 183 Queen's Road East,

Wan Chai, Hong Kong

You do NOT need to complete this request form if you have received the document(s) in the language or in the manner you want.

Part A - To receive the printed version

(Please check "X" appropriate boxes below)

I/We would like to receive a printed copy in □ English or □ Chinese or □ both English and Chinese of the following documents:

□

2020 Annual Report

□ Circular dated 17 March 2021 together with Notice of Annual General Meeting, and Proxy Form

Part B - To change the choice of language or means of receipt of Corporate Communications*

(Please check "X" ONLY ONE box below)

I/We would like to receive all future Corporate Communications of HKEX in the manner indicated below:

• □ by electronic means through the HKEX Group website(www.hkexgroup.com)(instead of in printed copies) withemail notification to my/our email address at

  (if any), or a notificationletter mailed to my/our address, of the publication of Corporate Communications on the HKEX Group website; or

• □ in printed form in English ONLY; or

• □ in printed form in Chinese ONLY; or

• □ in printed form in BOTH English and Chinese.

Full name(s) of registered shareholder(s) #:

(English)

(Chinese)

(Please use BLOCK LETTERS)

Address #:

(Please use BLOCK LETTERS)

Contact telephone number:

Date:

Signature(s):

*

Corporate Communication refers to any document issued or to be issued by HKEX for the information or action of holders of any of its securities, including, but not limited to, the directors' report and annual accounts together with a copy of the auditor's report, the interim report, a notice of meeting, a listing document, a circular and a proxy form.

# You are requested to fill in the details if you have downloaded this request form from the HKEX Group website. Notes:

• 1. Please complete this request form clearly. Any request form with no indicated choice, with no signature or otherwise incorrectly completed will be void.

• 2. The above instruction in Part B will apply to all future Corporate Communications to be sent to you until you notify HKEX otherwise by giving not less than seven days' notice in writing to HKEX's registrar, Hong Kong Registrars Limited (by post to 17M Floor, Hopewell Centre, 183 Queen's Road East, Wan Chai, Hong Kong or by email [e-mail]).

  HKXH - 17032021 - 1(7)

• 3. For the avoidance of doubt, we do not accept any special instructions written on this request form.

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 HKEX is on a voluntary basis. Failure to provide sufficient information may result in HKEX being unable to process your instructions and/or requests as stated in this form.

• (iii) Your Personal Data may be disclosed or transferred by HKEX to its subsidiaries, its share registrar, 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 to the Personal Data Privacy Officer of Hong Kong Registrars Limited at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wan Chai, Hong Kong.

• (v) Please refer to the HKEX's Privacy Policy Statement which is available on the HKEX Group website for further details.

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