Cultural exchange and trade between countries. According to Netease News, Dali has a long history and splendid culture, and is one of the earliest cultural birthplaces in Yunnan. During the Qin and Han Dynasties more than 4,000 years ago, Dali was the only way of "Sichuan National Road" (from Chengdu, Sichuan, through Dali and Baoshan, Yunnan, to Myanmar, and then to India), and it was an important gateway to promote Dali's contact with the mainland and cultural exchanges and trade between China and Southeast Asian countries.