Made up of 108 beads, divided into groups of 27 by four fotou (Buddah heads). All in finely carved ivory and pigmented in green except for the Buddah heads, which are in coral red. The chaozhu is a Rosary, based on the model of the Buddhist ones, which was introduced in official ceremonies of the Qin dynasty emperors, as stated in the code “Illustrated Regulations for the Cerimonial Paraphernalia in the Qing dynasty” by Huangchao Iiqi tushi. According to this text, the most precious material for the production of this kind of court necklaces were the oriental pearls (cf. the imperial necklace sold by Sotheby’s Hong Kong during the auction Fine Ceramics and Works of Art on April 8, 2010, lot 1813), but they exist in other materials as well, the fundamental aspect being that they adhered the instructions of the abovementioned code, regulating the number of beads, the fact that the Buddha heads had to be in another color or material than the rest of the necklace, the two extensions etc. The importance of this kind of court object is clear in a Yongzheng portrait, now at the Palace Museum of Beijing, in which the emperor is depicted wearing a pearl made Chao Zhu.