This is Sun Chengzong's strategy. In the original words, Liao people should keep Liao soil and raise Liao people with Liao soil. It is said that the land in Liaodong was gradually eroded by the late Jin Dynasty, and many Liaodong people lost their homes. At this time, incorporating them into the army and focusing on training can stimulate their enthusiasm for protecting their hometown and aim the hatred of losing their homes at Jin Mo. This feeling can run through the whole army, and the combat effectiveness will soar. It was in this situation that the most effective Ning Guan soldiers in the late Ming Dynasty were born.

In the early period of Liaodong War, it was mainly in northern Liaoning, such as Fushun and Qinghe. After the Battle of Salhu, the Ming Dynasty lost Shenyang, Tieling and Liaoyang. The front was forced to move to the Guanning-Jinfang area, Shanhaiguan, Ningyuan and Jinzhou, which are more famous places. Other places, such as Guangning, Songshan, Qiantun, Zhongqiansuo and Zhonghousuo, are also guarded by Liaodong people.