The destruction of Dun and Hu marked the beginning of the active period of Chu again, and it was also a harbinger that Chu would take full revenge on Cai. It can be seen from the territory of the Spring and Autumn Period that after the destruction of Dun and Hu by the Chu State, it suppressed the Cai State from the north, west and south (at that time, the Cai State was the capital of Xincai on the north bank of Rushui), and almost turned the Cai State into a state within a state of the Chu State.

In the spring of the first year of Lu Ai (BC494), King Zhao of Chu was about to attack the state of Cai; He issued orders to Suiguo, Chen, and Xu (Xu had already been destroyed by Zheng, and Chu had gathered the exiled remnants of Xu and moved to another location and restored Xu Guosheji), demanding that the three kingdoms provide troops, miscellaneous servants, and baggage.

After the coalition forces reached the outskirts of Xincai, the Chu army did not rush to attack, but first cut off Xincai's road to other cities, turning Xincai into an isolated city. Cai Guoren still remembers the strong combat effectiveness displayed by the Chu army when they destroyed Cai, and they still have lingering fears about the various terrorist incidents caused by the Chu army. And the preparations carried out by the coalition forces with great fanfare greatly stimulated the nerves of Cai Guoren.

The Chu people built a wall two zhang high and one zhang wide one mile east of Xincai City to prevent the Cai people from attacking and fleeing, and at the same time began to manufacture siege equipment. During the construction of the coalition forces, the momentum was quite huge: the work was carried out in several shifts, and the scene was full of people during the day and brightly lit at night; The coalition forces seem to have inexhaustible strength, and the scene is in full swing at all times.

Several old doctors in Cai's office who had experienced the disaster of the country's demise thirty-seven years ago advised Cai Zhaohou to persuade him to negotiate peace with the people of Chu as soon as possible, and not to wait until the city gate was broken by the enemy army before thinking of giving in.

Cai Zhaohou also lost his former arrogance at this time, he became helpless, restless, and depressed all day long. The prince persuaded him: "The old doctors are right, there is no point in continuing to resist, and the ministers and the people of the country cannot tolerate the destruction of the country again." They will definitely take action against their father, and his father should not turn himself into the next Duke of Qi Zhuang. ”

Only then did Marquis Cai Zhao send the crown prince out to make peace with the people of Chu. If the style of the previous Chu kings was followed, King Chu Zhao would not have allowed the envoys of the Cai State to step into the military camp at all; This is because the reception means reconciliation, reconciliation means forgiveness, and forgiveness means that Cai Guo can no longer be punished militarily. However, it was precisely because he could not forgive the people of Chu for humiliating him that Cai Zhaohou angrily joined forces with Wu to attack Chu and destroyed the borders of Chu. In that case, what reason does King Chu Zhao have to forgive him? Moreover, King Chu Zhao was completely sure that he would destroy the state of Cai again.

But an incredible situation still happened, King Chu Zhao actually met with the crown prince of Cai in person. For Cai Guoren's request, King Chu Zhao agreed; However, he also severely condemned Cai Zhaohou's madness, and demanded that the Cai people must cut the height of the city wall in half, hand over all chariots and most of the weapons, armor, hostages, and property, and only retain the basic defense force.

The crown prince did not have the courage to refuse these humiliating demands, nor did he have any room for bargaining, so he could only accept them unconditionally.

Two days later, the gate of the capital was opened, and Cai Zhaohou led the doctors, his sons, and the sons of the doctors out of the city to surrender, and at the same time a large number of Chinese men and women came out, and they were divided according to gender.

King Zhao of Chu pretended to be kind and met with the old enemy, and then took Chen Mingong, Tang Hou, Xu Nan and the army into Xincai. A few days later, the coalition forces obtained their share of the spoils, and then withdrew from Xincai.

After the coalition army returned to the division, Cai Zhaohou said at a court meeting: "Cai is no longer a complete country!" The people of Chu have pulled out our minions, how long can the tiger that has lost its minions survive? The people of Chu conquered Cai, but did not provide us with protection, knowing that they were leaving Cai to fend for themselves. We can no longer expect relations between the two countries to return to the state they were before the Battle of Baiju, nor can we expect the state of Chu to be merciful to us. Maintaining the status quo is a dead end.

Therefore, the widow believes that Cai Guo has to rely on the people of Wu if he wants to survive. The widow wants to send an envoy to Wu and ask for the country to be moved to the vicinity of Wu, what do the doctors think? ”

Cai Zhaohou said "what the doctors think" means that he has already decided, and the doctors just need to agree. Soon, the envoy of Cai Guo secretly came to Gusu to visit Fucha, and Fucha expressed support for Cai Zhaohou's decision; However, he also said that Wu was about to start a war against Yue, and he asked the envoy to convey to Cai Zhaohou that after the war was over, he would immediately help Cai move the capital.

The envoy of Cai went back satisfied, and Fucha made the final preparations for Vayue.

From the very beginning of his ascension to the throne, Fucha began to prepare for the war against Vietnam, constantly building warships, expanding and training the army, and sending a large number of spies to collect intelligence in Vietnam. In recommending the last work, Bo Ya made outstanding contributions. As mentioned earlier, Bo Yao took in a large number of corrupt officials and local ruffians who could not get along in the Chu State; It is not effective to spy on the intelligence of the Yue Kingdom, so the miscellaneous pieces in Bo Ya's family come in handy.

Those Wu people of Chu origin then showed their magical powers, disguised themselves as various identities to enter the Yue country, spying on various information such as geography and climate, defense system, political pattern, customs and customs. Every piece of information is a rare and precious piece of information, and Bo Yao regards it as a bargaining chip for Bo to obtain the favor of the new king (you must know that although Bo Yao and Wu Yuan have the same rank, in the heart of Lu Lu, the status of Wu Yao is much higher than that of Bo Ya; This is because Wu Yuan is a capable doer, and Bo Ya is a cowhide king who likes to show off his cleverness, and Fucha's views before his accession to the throne are also in line with his father's).

When the husband saw that Bo Ya was able to continue to collect so much and important military information, his face couldn't help but bloom; Bo Yao took the opportunity to say a lot of flattering things that those in power like to hear, and since then, the husband has gradually eliminated his bad impression of Bo Ya and turned to him as his right-hand man.

Although Wu Zixu noticed that Bo Yao's weight in King Wu's heart had gradually surpassed his own, he didn't care, and he didn't care if the reality would bring trouble to him - he was a person who was not shocked, he only knew how to do things in a down-to-earth manner, and he didn't care about competing for favor at all.

In order to confuse the Yue people, the Wu people adopted the strategy of attacking the east and the west. They built a huge military base on the north bank of the Qiantang River, where they repaired and built warships; At the same time, they were secretly doing the same work at the Zhufang shipbuilding base. In order to prevent leakage and espionage, the people of Wu moved all the people around Zhu Fang for fifty miles to the vicinity of the Qiantang River in advance; The Yue people, on the other hand, thought that Wu was engaged in a strategic shift (the warships of the Chu were built on the Zhu side, and the warships of the Yue were built on the Qiantang base), so they were even more convinced that the Wu State would launch a general attack from Jiangbei. The movement made by the Wu people in the Qiantang River base was quite large, so that all the attention of the Yue people was attracted to this place.