The Wolong Lake Reservoir of Jieguan Hall is located beside the Red Beach, a famous tourist resort in Panjin, where the Haihe River meets. The water surface of Wolong Lake is more than 1,000 mu, and each branch canal stretches for more than 10 miles. The depths vary, and the main trunk can be as deep as seven or eight meters deep, and it has never dried up. There is a spring under it that connects with the sea. The lake is mixed with sea and fresh water, and the water quality is unique. It breeds a special biological population-----Wolong Lake Reservoir fish.

Due to the fresh water, the reservoir organisms form a unique food chain and never feed any food. Although the output is not much, but the taste is unique, the entrance is fragrant, and it also has a special sweetness, which has the feeling that this fish is feasting on a hundred and one hundred flavors. Every winter, the net is pulled under the ice for fishing. The net is large and only catches more than 7 catties of fish, and only one net is drawn, which is really precious. It is a rare delicacy of Panjin seafood in winter!