Different from the external walls of buildings in other places in Xizang, which are mainly red, white and yellow, the walls of monasteries and residences in Sagya County, Xigaze are mainly red, white, and gray, representing the wisdom of Manjusri Bodhisattva, the mercy of the Avalokiteshvara Bodhisattva, and the power of Vajrapani Bodhisattva, respectively.