In fact, this famous couplet was written by Zuo, a Confucian general of Xiang Army in Qing Dynasty, and was first recorded in the hall of the Town God Temple in Sanyuan, Shaanxi Province. Zuo (1812-1885), an important official, strategist, politician, famous Xiang general and leader of the Westernization School in the late Qing Dynasty, experienced major historical events such as the movement of the Xiang army to pacify the Taiping Heavenly Kingdom, the Westernization Movement, the rebellion against Tongzhi in Shaanxi and Gansu, and the recovery of Xinjiang to safeguard China's reunification. Lin Zexu saw Zuo for the first time and wrote in calligraphy: "There are mountains here and bamboo cultivation in Maolin; I can read the Three Tombs and Five Classics, and I can read eight lines and nine hills. " Left pole feeling, still hanging on the Zhai wall in his later years. Liang Qichao called it "the first great man in 500 years".