Introduction to Chaihe Grand Canyon: Although Chaihe Grand Canyon is located in the Aershan Scenic Area, it belongs to Zhalantun in Hulunbuir City. Aershan is the birthplace of three rivers, the Halaha River, the Yimin River, and the Chai River. The source of the Chai River is in the Grand Canyon. The main body of the Grand Canyon is still a volcanic lava fault zone, which is 11 kilometers long.