The square belt of "white jade for pearls" in the Palace Museum is white and moist, with spots in some areas. The bas-relief figures have deep curly hair, high eyes and high nose, wearing narrow-sleeved robes, kneeling on the carpet with one leg and holding orbs in both hands for sacrifice. Realistic modeling, shawl fluttering from the shoulders, hidden and dense, and the whole body is decorated with dense yinxian, reflecting the close economic and cultural ties between the Tang Dynasty and Persia.