Period of early prevenient the Qin Dynasty, of by Teng Chong occupy southwest the Silk Road, already collude with the connection of Chinese southwest and South Asia, Xi Yazhu country.

• 早在先秦时期,经由腾冲的占西南丝绸之路,就已勾通了中国西南地区和南亚、西亚诸国的联系。