Zhao Qingsheng bait silk. Tengchong is located in the southwest of Yunnan Province, where bait silk is planted. The raw materials are cheap, the cost of the store is 30,000-60,000 yuan, and the cost is low. It is also a catering franchise brand with great development prospect and quick profit. Yunnan Province, called Yun or Dian for short, is one of the 23 provinces in China, located in the southwest of China, with Kunming as its capital.