Dr. Zhang Ya has been appointed as an independent non-executive director to the company's fifth board of directors, effective June 5, 2026. Her term will last until the conclusion of the fifth board's tenure, following approval at the annual general meeting.

Concurrently, Dr. Zhang has been appointed as a member of the board's audit committee, compensation and appraisal committee, nomination committee, and strategic development committee. Her tenure on these committees will align with her term as an independent non-executive director of the fifth board.

Effective the same date, Dr. Qiu Lili has stepped down from her roles as an independent non-executive director on the fifth board and as a member of the audit committee, compensation and appraisal committee, nomination committee, and strategic development committee.