Mountain and River Arithmetic Record

Jiashen is in national crisis, and the sky is falling and the earth is torn apart. In 1644, the Eight Banners cavalry broke through Shanhaiguan, and Li Zicheng was defeated and died. The Hongguang and Longwu Nanming regimes were successively destroyed by infighting and warlord betrayal. Blood flowed into the south of the Yangtze River under the order to shave off hair. The Han family was in turmoil, and thousands of people were in trouble. In these troubled times, Lu Jinwen started in northern Shaanxi and built a camp step by step from a corner. With "protecting all people" as his original intention, he wiped out bandits, appeased the refugees, built water conservancy projects, and innovated firearms, and brought Sichuan, Shaanxi, and Henan and Huguang were built into impregnable anti-Qing strongholds. Li Xin, Li Dingguo, Zhao Desheng, Chen Zhijie and other capable ministers and generals were gathered under his command, which became the biggest worry for the Manchu Qing to take over the Central Plains.