 After this incident, Yang Yiqing recognised that military operations in Yansui, Ningxia and Gansu had to be better coordinated, hence he urged the imperial court to appoint a viceroy to oversee the three areas.Liu Daxia (劉大夏) nominated Yang Yiqing for that position.The office of the viceroy was created in 1525, during the reign of the Jiajing Emperor, under the name ""tidu" of military affairs" (提督軍務).