It is well-knowned of the story of "stoop to conquer" . In an acient war happened in the Spring and Autumn period, Yue country was defeated by another country, Wu. And the lord of Yue, Gou Jian, was besieged in the Mt. Huiji by the enemy. The lord Gou have no choice but surrendered and prayed for peace to his enemy. Since then, the country Yue was add in territory of the Wu country. And the former lord Gou served in the palace as a slave in the follow days until the lord of Wu country, Fu chai, assoiled him as a plebeian 3 years later.

After returning to his hometown, Gou had never forgot what he lost and made his decision to revenge. In order to not forget the pain of national subjugation, he hanged a piece of gall bladder under the roof, tasted it before he did every thing. He also spelled a "bed" with crude sticks in his room and slept on it without blankets when he was tired. The hard life inspired his fighting spirit for a decade of years. At last, Gou led his people fighting agaist Wu and at last won the victory.

In December, 1965,  the famous bronze sword of Lord Gou was found in an acient aristocratic tombs in Hubei province. Archaeologists found a wooden box painted with black lacquer beside the mummy during excavation. And the luxurious bronze sword was placed in it. The sword and scabbard inosculated accurately. When the sword was drew out of the scabbard, to every one's superise, the sword was shining without any rust after being buryed in the tomb for thousands of years. They even did an experiment and cut a pile of paper breaking into two divides easily with the thin shap sword. Experts did a lot research and unscrambled the seal inscriptions carved on the sword and approved that it was the sword in Chinese ancient legend.