The Pearl Sea is located in the Yading Scenic Area, Daocheng County, Sichuan Province. At the foot of Xiannai Snow Mountain, it is a green pool formed by the melting snow water of the snowy mountains, with an area of only 0.1 square kilometers. The pool is hidden in the deep mountains and forests, the lake is surrounded by pine forests, the cloudy lake is surrounded by mist, and the snowy mountains reflect the lake on a sunny day, accompanied by a mysterious atmosphere.