Zhang's father, Zhang Songshan, is the actual controller of Winbond Health, and Zhang directly holds the shares of Winbond Health 1.92%. Therefore, Zhang and Winbond Health constitute a concerted action relationship.

Zhang now works for Winbond Health, responsible for investment and operation. He is currently the general manager of Winbond Medical Investment Co., Ltd., the chairman of Rheinland Health Technology Co., Ltd., and the executive director and general manager of Chongqing Winbond Medical Technology Co., Ltd. Zhang's father Zhang Songshan is the actual controller of Winbond Health, and Zhang directly holds the shares of Winbond Health 1.92%. Therefore, Zhang and Winbond Health constitute a concerted action relationship.