Introduction to couples in the center of the lake: There are four bedrock islands scattered on the east side of the vast blue Sai Lake. Among them, the main island is 32 meters above the north of the lake, covering an area of ​​105 hectares, with pavilions and temples on it. Legend has it that a long time ago, a young Mongolian man and woman grazed here and fell in love. Once, when a girl was grazing herds, she was violently assaulted by a prairie devil. The girl would rather die than obey and plunged into a deep pool. After hearing the news, the man rushed on horseback and hacked the devil to death. He also plunged into the deep pool. Suddenly, the waves surged and the prairie suddenly turned upside down. It turned into a vast sea, and a pair of lovers who died of hatred turned into an inseparable island in the middle of the lake in the waves. This is the origin of the scene "Couple in the Heart of the Lake".