Where does jadeite come from? According to historical records, "Wang Hao, the king of green jade, is a finely crafted heirloom. They are all born pagans. " Emerald is produced in the Wulong River basin in Pagan area, northern Myitkyina, Myanmar, with an east longitude of 96 3 and a north latitude of 25 8. Since the establishment of Yongchang County in Tengchong in the Eastern Han Dynasty, it has been to Pagan area north of Myitkyina. Tengyue Mansion was set up in the Ming Dynasty, and there is a record of "Tengyue produces jasper" in Travel Notes of Yunnan and Guizhou. The so-called "jade out of Yunnan" (jade out of Mengmao, jade out of Tengyue) refers to the Longken and Pagan areas in northern Myitkyina. This place used to be under the jurisdiction of China and Yunnan. "The Traffic History of China, India and Myanmar" records: "For hundreds of years, jades such as jadeite, ruby, sapphire, agate and amber produced by Mengyang Tusi (the jurisdiction of Ruili Mengmao) have attracted the attention of mainlanders because of convenient transportation. Merchants collect them and resell them everywhere. Yunnan is an important market as an intermediary, so people who buy jewelry suspect that Yunnan is their place of origin and call it' Yunnan Jade'. " It was not until 1885 that Pagan, the jade producing area, was incorporated into the territory of Myanmar after the British invaded Myanmar. Since then, "Emerald is produced in Myanmar" has become a fixed statement in the later period.