On September 4, the A-share semiconductor sector experienced a collective downturn, with notable declines across multiple stocks. Sourcejay Technology plummeted by over 10%, while Cambricon and Tongfu Microelectronics each fell by more than 7%. Leeyang IC and Chengdu Huawei also registered declines of more than 6%. Furthermore, Bright Semiconductor, Huahong Group, Dongxin Semiconductor, Everbright Optoelectronics, and Hygon each slipped by over 5%. This broad-based retreat underscores the challenges currently confronting the semiconductor industry and the prevailing market uncertainties.