But it is said that during the reign of Emperor Wu of the Western Han Dynasty, there was a sword maker. His surname was Tan, his given name was Yuanxi, his courtesy name was Liangyue, and he was from Moling, Zhangjun. When his ancestors lived in Juxian County, Shandong Province, they had great casting skills. Yuanxi's casting skills are also very close to the peak, and can almost be compared with Ou Yezi, a famous master of the Eastern Zhou Dynasty. In his later years, he wandered west across the Central Plains and lived in seclusion in the wilds of Wushan in the river gorges. At this time, I heard a female voice. As I walked along, I felt sleepy and fell asleep. I dreamed of the beauty of the concubine and the immortals, but I couldn't say enough about the two things. The woman and her pair of jade stones, one jade and one iron, their appearance and spirit disappeared. Yuan Xixi woke up and held a pair of jade-shaped pieces with a diameter of ruler in his hands. So the jade was broken into pieces and melted in a sword furnace to be forged together. After three years, a pair of iron and jade swords were made. The moment the sword was made, all the aura of the mountain gorge was collected in the furnace. The twin swords come out of the furnace, possessing spirituality. One of its blades is the color of snow, and the other is slightly green, both of which are not very light, and can be estimated in weight. A white sword with more iron and less jade can fly across the sky and fly through chaotic clouds; a green sword with more iron and less jade can control the vast land and whip the wind with rage. Yuan Xi was amazed at the ability of these two swords to play with clouds and wind. He used a green sword to carve a cloud seal on the white sword, and a white sword to carve a wind seal on the green sword. After a few years, the swords were civilized, making them embody human nature and be able to influence people's thoughts. Not long after, Yuan Xi died of illness, and his two swords were broken into the ground. He was buried with the Yunfeng Sword Seal, and he disappeared after keeping a vigil for three years. Since then, the Wushan swords have never been found. There are many rumors in the world that the iron and jade jade that Yuan Xi dreamed of were gifts from Yao, the goddess of Wushan Mountain. In order to control the world, emperors of all dynasties sent people to search for it, but never found it. By the end of the Sui Dynasty, eighteen groups had rebelled against the king, and seventy-two groups had risen in smoke. The world was in turmoil, and the people were in dire straits. Rebels are gathering on the main roads, bandits are gathering on the small roads, the war in China continues, and people everywhere are in trouble. In order to conquer the world, the princes restarted the search for the two swords.