In the novel The World in the Qin Dynasty, Tianxing Jiuge followed Han Fei into Korea and used Han Fei to contact Wei Zhuang and Brother Zheng. When he first met Ying Zheng, Han Fei said that the Inversed-Scale Sword ranked first, and he was a man who had reached the state of being one with the sword. A man was a sword, and a sword was a man. When a man reached the sword, he was invincible! Therefore, the Inversed-Scale Sword should be very powerful. However, it did not specify its rank. It only said that it was one of the famous swords from the Warring States Period. It should be a famous sword that actually existed in history, but it was spread by the characters in the novel.