As the Eastern Expedition of the Northern Jing Army is approaching, Dourgen will not wait to be killed. In order to fight against the fierce Northern Jing Army, Dourgen also made corresponding deployment.
That is to say, taking Jinzhou as the center, use the four fortresses of Xingshan, Tashan, Songshan and Dalinghe to delay the attack of the Ming army, and then use the powerful cavalry to harass and even cut off the long supply line from Shanhaiguan to Jinzhou of the Ming court, and fight again the battle of Songjin, which determines the fate of the Ming and Qing dynasties.
In order to stabilize Jinzhou's defense system, Dourgen followed Hong Chengchou's plan to guard Tashan with 5000 troops from Xia Chengde Department of Zhenglan Banner of the Han Army, 5000 troops from Gang Atai Department of Zhenghong Banner of the Han Army, and 5000 troops from Wu Department of Zhengbai Banner of the Han Army