dangchangxianIntroduction：Introduction to Suichang: Suchang County (tàn chāng) belongs to Weinan City, Gansu Province; the local monks of Suichang established the “Yichang State” during the Southern and Northern Dynasties, and Suichang was the name of the leader of the Yi tribe. It is located in the south of Gansu Province and the northwest of Weinan City. It is connected with Li County in the east, Zhouqu County and Diebu County in Gannan Prefecture, and Wudu District in the south, and Lixian County in Dingxi City in the north. 3,331 square kilometers, the county governs 6 towns and 336 villages in 19 townships, with a permanent residence of 274,313 (2010). [4-5] Suichang County is known as the “Millennium Medicine Township”, with more than 690 kinds of Chinese herbal medicines. There are the red holy land of the Long March of the Chinese Workers and Peasants Red Army, the Hadhapu, the national AAAA-level natural scenic spot, and the ancient site of the Tunchang ancient country. Suichang has been rated as “China's Green County”, “China's Best Cultural Ecotourism Destination”, “China Low Carbon Tourism Demonstration County” and “China Red Classic Tourist Resort” by relevant national industry associations. [6-7]