Changshou Lake (simplified Chinese: 长寿湖; traditional Chinese: 長壽湖; pinyin: Chángshòu Hú) is a man-made lake with another name Shizitun (Lion Beach) Reservoir in Changshou, Chongqing, China. In the purpose of generating electric power, four hydraulic power stations were built after the dam construction had been completed in the 1950s. Since then a state farm was set up for fishery and horticulture as well as animal husbandry. Its surface area is 60 km² with an irrigation area amounting to 248 km².