Diao Shijing, former heads of Unigroup Guoxin, and Zhao Weiguo, former chairman of Tsinghua Unigroup, were taken by related departments for investigation on July 16, Caixin reported, as China’s broader investigation of the semiconductor sector continues to expand. Li Luyuan, the chairman of a firm affiliated with Tsinghua Unigroup, was also investigated on the same day. The three have lost contact with outside, according to Caixin. Diao became Unigroup’s co-president in May 2018 and resigned from the company in August 2021. Aged 60, he had worked in government agencies in his early career before he joined Tsinghua Unigroup. Ding Wenwu, an executive of China’s semiconductor “Big Fund” under an investigation by China’s corruption watchdog, was a colleague of Diao. [Caixin, in Chinese]