Biography of the Four Beishan Masters of Jinhua: In the late Southern Song Dynasty, the Four Beishan Masters lived in seclusion at the foot of Beishan Mountain. They not only studied knowledge and cultivated their moral character, but also paid attention to the changes in the current situation in the Jin, Yuan and Southern Song Dynasties, and began to try out the construction of offensive and defensive equipment. News of war continued to come from the Sichuan, Xiangfan and Jianghuai front lines. Resisted the uprising of "Hua Shi Gang" Fan La Jinhuashan Taoist Bao Daoyi (a local) was able to use the "Xuanyuan Huntian Sword" to take a person's head in a hundred steps. His apprentice Zheng Biao (Dutou, Lanxi County, Wuzhou) was good at martial arts. He could also invite clouds to protect him and call gods to assist him, calling him "Zheng Demon Lord" Fang Yanshan Chen Shishi Thousand people pit to fight against Tong Guan's army Qiong Ying Tong Guan, Han Shizhong's double swords (one of which was named "Xiao Qing"), Song Jiang's team Wu Song and others lost their arms during the bloody battle in Dongyuan, Hangzhou