CHYY Development Group Limited that Ms. Wong Lai Yuk has resigned as the company secretary of the Company and has ceased to act as an authorised representative of the Company under Rule 5.24 of the Rules Governing the Listing of Securities on the GEM of The Stock Exchange of Hong Kong Limited and as an authorised representative of the Company for accepting the service of process or notice in Hong Kong under Part 16 of Companies Ordinance with effect from August 10, 2022. Ms. Wong confirmed that she has no disagreement with the Board and there are no other matters in respect of her resignation that needs to be brought to the attention of the shareholders of the Company or the Stock Exchange. The Board further announces that, immediately after the abovementioned resignation of Ms. Wong as the Company Secretary and as the Authorised Representatives, Ms. Chan Lok Yin has been appointed as the Company Secretary and as the Authorised Representatives of the Company with effect from 10 August 2022.

Ms. Chan, aged 37, is an associate member of Hong Kong Institute of Certified Public Accountants and an associate member of the Hong Kong Chartered Governance Institute. She holds a bachelor's degree of accounting from Edinburgh Napier University in United Kingdom in 2008. Ms. Chan has over 10 years of auditing, accounting, corporate governance and company secretarial experience.