The Suhuai region has a very strategic position, stretching across four provinces of Jiangsu, Anhui, Shandong, Henan, and is also a key place connecting the north and south, the throat of the north, the gateway to the south, and the railway. Beijing-Shanghai and Longhai Railway, the intersection of railway lines here is the battlefield for military strategists. ,Tu Dueyang was not idle either. In the name of the Director General of Public Security, he sent an official dispatch to the Ministry of Internal Affairs and Administrative Yuan, requesting to upgrade the high-level special department of the Shanghai Police Department to a high-level police department. especially of the General Department of Police, all are under the jurisdiction of the Special Zone High Commissioner.