Mineral introduction: Baoshan is commonly known as Baoling, and in ancient times it was called "Dakuo Mountain". It was the place where Zhao Yun conquered Guiyang County and stationed troops during the Three Kingdoms period. The mineral deposits here are extremely rich, including lead, zinc, silver, gold, molybdenum, rhenium, bismuth, copper, sulfur, iron and other non-ferrous metals. It is the place where silver is smelted and smelted by Chinese officials since the Han Dynasty, ranking first in the world. The raw materials of the agricultural tool - Shen Nong Zuo Lei and the best sword in the world - Shang Fang Sword are both produced in Baoshan.