The formation of each lake has its own unique historical reasons, and Suixian North Lake is no exception. According to records, the water quality of Beihu Lake in Sui County is clean, with an average water depth of 2.2 meters and the deepest point of 3.9 meters. Its formation is legendary. The ancient Yellow River is very close to the present Sui County, about15km. The jurisdiction area of Gusui Prefecture is quite large, and many places in Minquan County are now the territory of Suizhou. Next to the old Yellow River in Minquan County, there is a village called Suizhouba, which is said to be named after the jurisdiction at that time. According to records, the ancient city wall was built in the Northern Song Dynasty. Since ancient times, people have known that the Yellow River is a troubled mother river, which has flooded for five years, leaving her children homeless. At that time, people's ability to resist natural disasters was not strong Whenever the Yellow River floods and rushes to the city gate, state officials take the method of blocking the enemy and covering the city gate with water to prevent the Yellow River from washing away their carefully built homes, and the sediment deposited after the impact of the Yellow River is deposited outside the city wall. After several years of flooding of the Yellow River, Suizhou has gradually formed a situation of low potential in the city and high terrain outside the city, just like an "underground city". This is the main reason why natural disasters created the North Lake. The reason for the devastating disappearance of Suizhou ancient city is nothing more than human factors. We trace the history back to the fifteenth year of Chongzhen in the Ming Dynasty, that is, 1642. Li Zicheng, the leader of the peasant uprising army who shocked the ruling and opposition parties at that time, together with Luo Rucai and Yuan Shizhong, fought a bloody battle and conquered Suizhou, which was deep in the pool and strong in the city. Li Zicheng, who was invincible, once planned to attack Kaifeng and build its capital in the Capital of the Song Dynasty. He followed Qin Shihuang's strategy of "cutting down heavy branches first if you want to fall down big trees" and sent troops to demolish Suizhou city walls. 1642 In September, when Li Zicheng attacked Kaifeng, he fought a life-and-death battle with the Ming army. Regardless of the lives of the people, the two sides replaced the soldiers with water, stripping the Yellow River levee, making the water of the Yellow River rush south like a wild horse that loosened the reins, plunging thousands of miles, and drowning Suizhou, which was demolished by Li Zicheng, in a piece of Wang Yang. Since then, Suizhou City has become a lake with a city under the city and a lake on the city, but the local people have become the biggest victims, causing the whole city to be homeless. The flood destroyed their homes, so people had to move their families to a highland in the south of the city with tears in their eyes and rebuild their homes. Among many lakes in China, it is rare to see a very regular rectangle like Suixian North Lake, because the formation of the lake is directly related to a castle buried underground. It can be compared and described that the whole area of Beihu Lake is as big as Suizhou Ancient City. North Lake in Sui County is rich in water resources, and it never dries up even in years of long drought and no rain, which is very rare in China. People infer from this that the North Lake is the dragon spring water gushing out of the ground, which is a bit magical and unbelievable. It is credible that the bottom of the lake is a castle with a solid foundation, which keeps the lake from leaking and has nurtured a nation for thousands of years. The ancients used this poem to describe the North Lake in Sui County: "There is no wind mill on the plane, and there are a few sand snails on the jasper plate." And I can only express my feelings by drawing lines. When I came to Beihu Lake in Sui County, I felt like a "Little West Lake". Local friends are proud to be born here. Suixian, which belongs to Shangqiu City, was called Suizhou in ancient times. This small town with a history of more than 2,200 years has nurtured rich natural and cultural landscapes, making it a "famous historical and cultural city in the Central Plains", especially the rippling blue waves in the north of the city, adding a bit of autumn to this ancient and young town. The local people said: a handful of North Lake water is a touching historical story; Grab a handful of North Lake soil and you can explore a magnificent ancient building. Old people say that natural and man-made disasters formed the North Lake.