Formerly known as Shuanghe Reservoir, there used to be a 12-hole arch bridge near the dam. Next to the 12-hole arch bridge, there is an old street named "12-hole bridge". Shuanglong Lake is named because the water near the dam is winding and looks like "Shuanglong robs treasure". It's a good place for fishing. There are so many people coming to fish that they can stay here.