According to legend, Meng Liang was born in poverty, lost his father at an early age and was raised by a widowed mother. When he was young, he was reckless and aggressive. He often fights with people and refuses to listen to persuasion, but when his mother is present, he immediately stops. When I grow up, I am bold and straightforward, but I am also brave and fearless. When Yang Ren was the magistrate of Baozhou (Baoding), it was repeatedly defeated by the invading army of the defeated country (Qidan), and it passed the three levels of sublime. After more than 20 years in office, northerners called him Yang Liulang, afraid to call him by his first name. Although he is obedient to Yang, he is as close as a brother, but he is deeply trusted. Sanguankou was an important frontier of Jiyou Mansion in Song Dynasty: 2 1 Yijinguan was located in Bazhou City at the beginning of the century; The tile bridge is closed by the river in the south of Xiongxian County. This river was called Yishui in ancient times, also called Juma River, because the river was too shallow to ferry and too deep to race horses, which could stop the cavalry in the north. Levin Pass, also called Caoqiao Pass, is located in Gaoyang County. At that time, wars were frequent and the border was unstable. Meng Liang is especially filial to his mother. He must do everything for her. However, my mother is old, and I am afraid that I will be loyal to my country for a long time and filial to my mother for a short time. So no matter where I go, I will drag my mother to the army in the morning and evening for more than 20 years. Later, my mother died in Yijinguan, and Meng Liang was very painful. Because of years of war and poor traffic, she didn't have time to transport Lingshu back to her hometown, so Yang Liulang tried every means to persuade her. Later, she decided to temporarily bury her in the rear near the border, not far from Guangling City, where the army collected food and grass, so that she could take advantage of the opportunity of escorting food and grass to sacrifice. Afraid of being forgotten for a long time, he built a high platform on the grave, hoping it could be passed down forever. Although there are some attachments to this legend, the three passes of Yang guarding the border pass in the Song Dynasty were indeed in this area.