With the appearance of the ancient lock of the canal in Liangshui Town, the Liaocheng section of the canal became a hot topic for a while. However, when people focus on the canal belonging to Huitong River dug in the Yuan Dynasty, they inadvertently ignore the attention of another canal that flows through the northwest of Liaocheng and has a longer history and is related to Huitong River, that is, the Wei Canal, which people usually call. Before coming to guanxian Beiguantao Town, which is located at the junction of Shandong and Hebei, we didn't expect that this ancient canal was still flowing smoothly, and it was this ancient canal that divided the jurisdiction of Shandong and Hebei. The high dikes on both sides of the bank are very open, and there are layers of trees growing on the dikes, which reminds us that if it is hot summer, it must be a good place to escape the heat. Dai grew up in Beiguantao Town, worked in the town government, and studied the history and culture of his hometown. According to him, the Wei Canal has a long history. It was called Qinghe or Qingshui in the Warring States Period and Tunshi River in the Han Dynasty. In the second year of Yuanfeng in the Western Han Dynasty (BC 109), the Yellow River was set in Guantao and became a tributary of Tunshi River. According to the records of Yuanhe County Records in Tang Dynasty, Tunshi River is located in West Erli, Guantao County. Guantao Ancient County is located in North Guantao Town, guanxian. In the Eastern Han Dynasty, Cao Cao prevented Qi Shui from entering Baigou. When the capital of the Eastern Wei Dynasty moved from Luoyang to Yecheng, the Yellow River and the Baihe River were used to communicate, and both of them could reach the northern end of Hebei Plain through the canal. Part of the old road of Tunshi River has become the main waterway in the area north of the Yellow River, which basically forms today's shipping trend. When Yang Di opened the Yongji Canal, part of it was built by using the old road of Tunshi River. Dai said that before the Sui Dynasty, the former Guantao County was permanently located in today's ancient eastern city of guanxian, but it was only ten miles away from Yongji Canal. Thus, in the second year of Sui Daye (AD 606), Guantao County moved 40 miles north along Yongji Canal, which is today's Beiguantao Town. It is understood that in Liaocheng, the Wei Canal flows through two counties and cities, guanxian and Linqing. During the Tang and Song Dynasties, the route of Yongji Canal has been closely researched, including Yongji (North Guantao) and Liaocheng Linqing (now Linxi). The origin of the name Wei Canal is related to Yang Di's digging of the Grand Canal. After the Sui Dynasty unified China, in order to strengthen the central government's local control and the economic and cultural exchanges between the North and the South, a grand North-South Grand Canal was dug, running through five major water systems in China for 2,700 kilometers. Among them, Yongji Canal is the longest section. Yongji Canal is divided into two sections, one from Qinshui into the Yellow River estuary to Tianjin today, and the other from Tianjin to the south of Beijing today, with a total length of 1.900 kilometers. Since then, Yongji Canal has experienced many evolutions and changes. It was called Yongji Canal in Sui and Tang Dynasties, River in Song Dynasty, Weihe River in Yuan, Ming and Qing Dynasties and Weihe Canal in modern times. Guantao Ancient County, where Guantao Town is now located, is located in Yongji Canal Waterway Terminal, which was renamed Yongji County in the Tang Dynasty. During the Sui and Tang Dynasties, the main function of Guantao Grand Canal was water transportation. At that time, there were more than 20 thousand waterwheels every year, including more than 30 thousand navy and merchant ships. In Song Dynasty, Yongji Canal was renamed Yu He River, and it was still navigable in the early years of Northern Song Dynasty. 1999 edition of Ci Hai wrote: "In the feudal era of China, the Yuhe was often called the Yuhe ... The so-called Yuhe in Song and Yuan Dynasties, especially the Weihe River in Henan and Hebei today, was part of the Yongji Canal opened by Sui." Huitong River, the Grand Canal of Beijing-Hangzhou, was dug in the Yuan Dynasty, and shipping was opened at the end of 19 (AD 1282), which opened a new era of water transportation. However, with the opening of Huitong River, the water transport of Wei Canal is declining. In the fourth year of Dade (AD 1300), in order to solve the water shortage of Weihe River, the water from Zhanghe River was diverted. In the Ming Dynasty, Judy, the prince of Yan, led an army to Guantao to attack General Sheng Yong of Yan Ping in Dongchang. Yongle/KLOC moved its capital to Beijing in 0/8, and the Wei Canal once again ushered in the spring of water transportation. The counties along the river hired carts to transport tribute grain to the wharf, and the grain transportation office was responsible for transporting it directly to Beijing. There are many granaries along the Weiyun River. Then, there is a village called Xu Wancang near Guantaoweiqu. In the ancient city, the water granary for transporting grain can store all kinds of grain. 1584, the grain inspection office in charge of grain transportation moved to the north gate of Guantao county. In the early Qing Dynasty, water transportation, river affairs and San Francisco were listed as three major national events. In the ninth year of Xianfeng (AD 1859), a Lika was set up in Guantao West Street, and a special person was assigned to take charge of water transportation. There are many shops and restaurants on the street from Guantao City to the pier, the canal pier is guarded, and merchant ships and waterwheels come and go. A busy scene, the Weihe River rose in autumn and became a Guantao. In the Tang Dynasty, Guantao was once called Maozhou. Today, in this area, people often say that "walking through Beijing (Beijing), passing through Weifang (Tianjin) and catching up with Maozhou (Guantao) Conference for three years" means that a person is well-informed in the Jianghu.