 The office was renamed to ""zongzhi"" (總制) in 1528, and to ""zongdu"" (總督) in 1540.The headquarters were located at Huamachi (花馬池; present-day Yanchi County, Ningxia).The office was recreated in 1645, during the reign of the Shunzhi Emperor, as "Viceroy of the Three Borders in Shaanxi" (陝西三邊總督), with the headquarters at Guyuan.