I want to know that there was a county in Hunan in the late Ming and early Qing dynasties, when Sichuanese were killed by Zhang. We fill Sichuan with Huguang.

The "Hunan" here should be "Huguang Province", which is roughly the territory of Hunan and Hubei provinces today. However, Huguang Province has never had a "Gao Qian County". "Gao Qian County" here should be a slip of the tongue by "Gao Qian Weil". The "Gao Qian Weir" in the mouth of migrants in Xiaogan Township, Macheng, Sichuan Province are "Gao Qian Weir, Gaokan Weir, High-order Weir, Gao Qian Yard, Gaojia Weir, Gao Qian Weir ...", which are all slips of the tongue formed by the descendants of migrants hundreds of years later. The actual place names are "Jiangjiayan" and "Gaoan River". There are three docks in the history of Jushui River in Macheng, one in the north near the old county town of Macheng and the other in the south of Jiangjiayan Wharf. These two docks are the starting point for immigrants to move out and leave Macheng County at the end of Yuan Dynasty. There are many Chen's ancestral homes in Xiaogan Township, Macheng, such as Chengjia Town, Pujiang County, formerly known as "Chen Jiaying". The ancestor of this branch (whose name is unknown) moved to Sichuan from Xiaogan Township in Macheng at the end of Yuan Dynasty. In the seventh year of Song Jiayou (1062), Chen Fengling of Yimen in Jiangzhou was enfeoffed and Chen Siyi was named "Macheng Village", so most of Chen in Macheng County were descendants of Siyigong.