Xiping was the place where the Baihuang family migrated in ancient times and became the "Baizi Kingdom". It belonged to Chu in the Spring and Autumn Period and to Han in the Warring States Period. Originating from the mountainous area southwest of Xiping, Tangxi has an advantageous geographical location and rich iron ore resources. It is adjacent to the Wugang District of Pingdingshan today. Tangxi water contains special trace elements and is extremely effective in heat treatment. Historical records say that "quenched swords are extremely strong and sharp." Therefore, this place has become a geomantic treasure land for smelting iron and swords. Since the Spring and Autumn Period, a large number of iron and sword craftsmen have gathered here. According to records, the number of craftsmen at its peak reached 7,000. Sword-making masters such as Ou Yezi, Ganjiang, and Mo Xie from the south also came to Xiping. The Eight Immortals crossed the sea and showed their magical powers. The swords such as Gongbu, Tai'a, and Longyuan were forged, which greatly impressed the King of Chu. Due to the frequent wars during the Spring and Autumn Period and the Warring States Period, a large number of qualified swords were needed, which promoted the rapid development of the iron-smelting and sword-casting industry in the Tangxi area of ????Xiping, so that all the princes and countries knew Tangxi of Chu State, "the world is called Chu Tangxi". At that time, the scale of iron-smelting and sword-making was very prosperous. There were many workshops and iron-smelting furnaces in the Tangxi area, forming Tangxi City, Hebo City, Yelu East City and West City. The government specially assigned officials to manage it. "The Han Dynasty established iron officials, and the Jin Dynasty also Set up an iron official to take over the household”~