gejiushiIntroduction：Gejiu Profile: Gejiu City is a county-level city in the Honghe Hani and Yi Autonomous Prefecture of Yunnan Province, China. "Old" is derived from the transliteration of the proverbial "fruit", meaning the place where the scorpion and the glutinous rice are eaten. It has a population of 453,300 square kilometers and a population of 453,300 (2014). The old metallurgical industrial city, which mainly produces tin and produces various non-ferrous metals such as lead, zinc and copper, is known as the “Xidu”. The local area is famous for producing tin. The history of mining tin mines is the largest tin-producing base in China in about 2000 and the earliest tin-producing base in the world.