Xiping has been a sacred place for casting swords since ancient times. Xiping smelting furnace city is an important cold weapon production town during the Spring and Autumn Period and the Warring States Period. "Historical Records" said: "Xiping has Longquan spring water, which can quench the shock wave, so there are Longquan swords and Chu swords." "Tai Kang Di Zhi" contains: "Ganjiang and Mo Xie craftsmen are also famous, and their swords are all from xiping county." "China Shitong" contains: "Xiping has longyuan water and a strong sword." Many famous swords recorded in history are from Xiping. After Qin Shihuang established the Daqin Empire, he summoned the world famous swordsmen, which lasted for three years and cast the sword of Qin. Qin Shihuang ordered Reese to carve the word "Qin Ding" on the sword to show the great cause of world unification. One of his swords was buried under the Epang Palace as the treasure of the town house, and the other Qin Shihuang was the sword with him, which ruled the world. Since then, it has created a precedent in the history of the sword of the Emperor of Heaven and become a symbol of rights, status, justice and strength. Qin Dingjian embodies the highest sword casting technology in the world during the Spring and Autumn Period and the Warring States Period. It is a legend of the king, so it is praised as "the first sword in the world" by later generations.