Commentary The Chinese regime is purging the political and legal system before its 20th national congress convenes later this year. As part of the clean-up, another senior police officer in China’s northern Liaoning Province was recently put under investigation. On March 1, the Chinese Communist Party’s (CCP) top disciplinary body announced the investigation of Wang Dawei for “serious disciplinary violations” on its official website. Wang was a deputy governor of Liaoning Province, police chief of the Provincial Public Security Department, and deputy team leader of education and rectification of the provincial political and legal system. Wang is the fourth head of Liaoning Provincial Public Security Department to be investigated in the past 21 years. Wang’s three predecessors include Li Feng, who served as the provincial police chief from 2001 to 2002. He was investigated in 2016 for corruption. Li Wenxin, who succeeded Li Feng as the provincial police chief and …