At that time, Mao Shanguo, deputy director of the investigation room 1 of the anti-corruption bureau of Hunan Provincial Procuratorate, was selected as the first outstanding investigator. This person was selected for undertaking a series of important cases, such as the bribery case of Wang Daosheng, deputy secretary-general of the provincial government, Yang Zhida, director of the provincial senior management bureau, and Wu Zhenhan, president of the provincial high court, and the list could not be found.