The ancient tea-horse road has developed rapidly. The source of the ancient road is Pu’er and Simao as the center. There are 5 tea-horse avenues radiating east, west, south and north. The endless caravan has established an immortal for the transmission of Pu’er tea. Their feat is that they continue to transport the tea from various tea mountains to Simao Pu’er for processing, and then transport them to Tibet, Nepal, and India along the tea-horse avenue northwest, and sell them to Southeast Asian countries in the south.