Park introduction: The Hengshui Lake National Nature Reserve covers an area of hundreds of square kilometers, with one lake connecting two cities. Over the past two thousand years, many rivers such as the ancient Yellow River and the ancient Zhang River have converged here and swayed and eroded, forming this vast and boundless 1,000-hectare depression. It is also said that Dayu left this beautiful lake when he controlled the floods, which is quite unique. Legendary.