Fu Chai, the king of Wu, always remembers his father's hatred. Of course, Gou Jian also knows that the state of Wu is actually his own serious trouble. Three years later (493 BC), when Gou Jian learned that Fu Chai was actively expanding his army to prepare for war, he planned to attack the state of Wu first.
At this time, Fan Li was firmly against it, and several admonitions failed. Finally, the king of Yue decided to attack the state of Wu. When the state of Wu learned about the attack attempt of the state of Yue, Fu Chai, king of Wu, gathered all the elite and defeated the Yue army in Fu Jiao. Finally, King Gou Jian of Yue was defeated, and more than 5000 people retreated to Kuaiji. Then, taking advantage of the victory, Wu's army quickly surrounded Kuaiji.
Fan Li gave Gou Jian some advice. Gou Jian wanted to fight with Fu Chai to the death, but Fan Li put forward some suggestions. So Gou Jian sent a doctor Wen Zhong to ask Wu for peace. While kowtowing, he saluted the king of Wu and said, "Gou Jian is willing to be your slave, and his wife is willing to be your concubine." This made King Wu very happy, but Wu Zixu was very opposed. In view of this situation, Gou Jian is ready to fight to death. But fortunately, taizai Chu (P ī), a greedy man in Wu state, was bribed by Wen Zhong. In this way, Gou Jian and Fan Li became slaves of the king of Wu.
After coming to Wu, Gou Jian's job was to raise horses, and his wife was responsible for cleaning. Even if Gou Jian was so hard-working, Wu Zixu suggested killing him. The performance of Gou Jian is impeccable.
In order to dispel the wariness of Fu Chai, when Gou Jian saw that the king was ill, he went to make a diagnosis in person. In order to confirm when the king recovered, he also tasted the stool and urine of the king himself. After tasting it, Gou Jian happily congratulated King Wu: congratulations on his recovery. This moved the king of Wu, but Wu Zixu strongly recommended killing Gou Jian. Fu Chai didn't adopt Wu Zixu's suggestion. Gou Jian's obedience was recognized by Fu Chai, so he was put back to Yue.
Gou Jian, who came back to China, began to live a hard life. He carefully selected beauty Xi Shi to present to Fu Chai. The arrival of Xi Shi made Fu Chai relax his vigilance. At this time, the king of Wu believed in Gou Jian's loyalty, and he put all his energy on fighting for hegemony with the northern princes. No matter how Wu Zixu persuades him, the king of Wu is not moved. At this point, great disaster begins to come.
In 437 BC, King Gou Jian of Yue led the army to break through the gate of Wu Kingdom. The whole army of Wu Kingdom was destroyed, and Fu Chai died of suicide. King Gou Jian of Yue finally completed his revenge mission. He also became the first monarch in the history to make great efforts to rule and restore the country again in the case of subjugation!