A lot. Many people in Tengchong, Yunnan do this business. The mining, transportation, processing and sales of jadeite have always been done by Yunnan people. In an ancient Chinese temple in Amolubo, the ancient capital city of Myanmar, the names of 5,000 jade merchants in China are engraved on the inscription, which is also introduced in jade margin and jewelry. In the middle of the Ming Dynasty, senior eunuchs stationed in Tengchong, Baoshan, specializing in purchasing jewelry. At that time, the route from Yongchang Tengyue to Myitkyina, Myanmar, had been called "Jade Road" and "Baojing Road". At the peak of the trade route from Tengchong to Myanmar, more than 20,000 mules and horses pass through here every day, and Tengchong's jewelry trade accounts for almost 90% of the world's jade trade. By 1950, there were more than 300,000 overseas Chinese in Tengchong County. To this day, there are still tens of thousands of Yunnan people engaged in the jade industry in Myanmar. This article is provided by www.hibys.com.