Introduction to the Butian Stone: The Butian Stone is located on the bank of the Tianchi Lake in Changbai Mountain, at the mouth of the Chengcha River. From a height, it looks like a huge ivory tree stretching into the Tianchi Lake. The highest point is about 10 meters and the length is more than 50 meters. It is a pocket peninsula extending into Tianchi. It is also a tourist attraction with rich cultural connotations in Changbai Mountain.