RSUN SER (01971) announced that Mr. Zeng Junkai has resigned from his positions as a Non-executive Director, Chairman of the Board, Chairman of the Board Nomination Committee, and member of the Audit Committee to dedicate more time to his personal affairs. He will also cease to serve as the company's authorized representative under Rule 3.05 of the Hong Kong Stock Exchange's Listing Rules, effective January 14, 2026. Mr. Jia Hongbo has been appointed as an Executive Director, Chairman, Chairman of the Nomination Committee, and authorized representative, effective from January 14, 2026.