Dai Li
The Central Bureau of Investigation and Statistics (CBIS) ), commonly known as Zhongtong (), was an intelligence unit under the Central Executive Committee of the Kuomintang. It was one of Chiang Kai-shek's two police and military intelligence agencies, the other being the Military Bureau of Investigation and Statistics headed by Dai Li from 1929 until his death in 1946. The CBIS focused on civilian intelligence, while the MBIS targeted military activities.