Not retired. According to the website of Hunan Provincial People's Government, on July 17, 2023, Xiao and his party, secretary of the Party Committee and director of the Provincial State-owned Assets Supervision and Administration Commission, investigated and guided the work of scientific and technological innovation and digital transformation in Hunan Expressway Group Co., Ltd., accompanied by Zhou Zhizhong, deputy secretary, vice chairman and general manager of the Party Committee, members of the Party Committee and deputy general manager. Therefore, as of August 8, 2023, Zhou Zhizhong of Hunan Expressway Group has not retired.