The real swallow Li San in history is a native of Cangzhou, a native of Dongzhen Village, He Lin Township, west of xian county City, Cangzhou City. His fifth generation, Mr. Li Shuzhen, died on 20 13, and his sixth generation, Li Lianzhou, and seventh generation, Sun Dujian, were here. Old people in xian county and around know about it. Xi 'an County Records compiled by the County Records Office,

Li San, a swallow, is from xian county, Cangzhou, Hebei. He was born in 1837, and his real name is Li Yunlong. He is good at climbing over the eaves and has the nickname of swallow. Because it ranks third in China, it is also called Swallow Li San. It is recorded in the local textbooks of Records of xian county and Forty-eight Villages. His descendants published the monograph "Stealing the Swallow Li San and His Lightness Skills", and the declared "Swallow Li San Lightness Skills" is currently the fifth batch of municipal intangible cultural heritage in Cangzhou City.