It is said that the copper on the Yexi River was struck by lightning, which formed the essence of heaven and earth, and made five swords, namely Zanlu, Chunjun, Shengxie, Yuchang and Giant Que. The fish intestine sword, also known as the fish sword, is said to have been made by Ou Yizi, the swordsman of the King of Yue. The swordsman used cans from Ziluo Mountain
After the fish intestine sword was refined, King Yue invited Xue Zhu, a good swordsman, to look at the sword. Xue Zhu's swordsman has psychic abilities. He said: Yuchang Sword is "disobedient and cannot be obeyed". "The minister kills the king, and the son kills the father." Xue Zhu said that the fish intestine sword was used to kill the king and his father because it violated the order. Later, the State of Yue presented a treasure to the State of Wu, so the sword entered the State of Wu from the State of Yue. What do you think of the King of Yue giving it to the King of Wu? It is said that Gong Ziguang, later Wu, accidentally obtained three of the five swords, namely Sheng Xie and Zhan Lu.
In 515 BC, Prince Guang and Zhuan Zhu conspired to offer a dagger to the belly of a fish in the name of entertaining Wu Wanglue, who was in power at the time. Zhuan Zhu, who was a chef, assassinated Wu Wanglue on the spot, but he was also killed by his bodyguards. This incident is known as "stabbing Wang Liao", "turning beads to stab Wang Liao" or "setting the whole gang to stab five kings Liao". It is said that the fish intestine sword is called the fish intestine sword for two reasons. It is said that the fish intestine sword got its name because it is small enough to be hidden in the belly of a fish. The reason why Gongzi Guang and Zhuangzi chose the fish intestine sword was mainly because it was sharp and mainly because it could be hidden in the belly of the fish, and Wu Wangliao liked to eat grilled fish. The other one is more interesting. It is said that the fish intestine sword got its name because the pattern on the blade is the same as that of fish intestines. The so-called fish intestines do not refer to the internal organs of raw fish, but to the appearance of cooked fish intestines after the wings are peeled off. That is, the sword body is jagged and smooth.
The answer is no doubt. According to archaeological excavation results, a steel sword was unearthed from a late Spring and Autumn Period tomb in Yangjiashan, Changsha, Hunan. After heat treatment, the cross-section of the sword body can also show the degree of repeated forging. Among the iron tools unearthed from the Yashoudu site during the Warring States Period in Hebei Province, there are hardened steel parts.