Is today's Meng Gong area. "Red and white jade is the best, and jade color is the top grade, with different names, all of which are from Meng Gong". Emeralds are produced in Meng Gong and Myitkyina in northern Myanmar. Because Tengchong is close to Myitkyina, some people think that Tengchong produces jasper. "Since the opening of Yunnan in the Yuan Dynasty, for hundreds of years, jade, agate and amber jewelry produced in northern Myanmar have attracted more and more attention from mainlanders because of developed transportation, and merchants from all over the world have collected and resold them. Yunnan is an important market as an intermediary, so those who buy pearls and jade should doubt that Yunnan is their origin. " 1885, when Britain invaded Myanmar, it became a fixed statement that jadeite jade was produced in Myanmar. Meng Gong is now in Kachin State, Myanmar, and is located on the right bank of the Meng Gong River where the Mandalay-Mizner Railway passes, 492km south of Mandalay and 27km east of Myitkyina. Most residents are middle-aged mixed-race and Shan descendants. According to the History of Myanmar, the establishment of Meng Gong City is closely related to the jade produced in its area. The first toaster in Meng Gong, Shan Longpo, toasted at 12 15. It is said that when he crossed the river from the upper reaches of Nangong River (another name for Meng Gong River) not far from Meng Gong, he accidentally found a drum-shaped sapphire on the beach. He was surprised and thought it was a good sign, so he decided to build a city nearby and named it Meng Gong. Since then, this jade has been preserved by the toast as a treasure from generation to generation. Meng Gong is rich in products. Besides producing jade, it also specializes in producing lac and cypress utensils. In ancient times, it was known as the city of cypress, especially the flawless emerald, which is unparalleled in the world and has always been longed for by businessmen. If you get good jade, you can make a fortune from underground, and expatriates from Tengchong and other places make a living here. Rich businessmen and tycoons will buy jade for the tenth time. Court officials distinguish between hat beads and jade carvings. Tengchong Jinjiayuan was named after Yuan Dynasty eunuch Jin Gonggong bought Baoyu accommodation. In the tenth year of Chenghua in the Ming Dynasty (AD 1474), Yunnan eunuch Qian Neng guarded the army, which was because Suo Yu failed. In history, a large number of overseas Chinese moved here, including Guandi Temple and God of Wealth Temple built by overseas Chinese. Because overseas Chinese dig and traffic jade from Yunnan, some people call Meng Gong jade "Yunnan gem". Meng Gong is known as the "hometown of jade", and most citizens are engaged in jade mining, processing and production. Meng Gong is also an important producer of amber, gold, tree fossils, rubies and sapphires. It is a historical name, and now it has been upgraded from a pagan in the jade world to Sheng, so it is the main name of the place of origin.