In the spring of the second year of Lu Dinggong (BC508), Kirito finally couldn't bear it anymore and announced that he would sever diplomatic relations with Chu, abolish all alliance treaties, and no longer pay tribute to Chu. It is impossible to verify whether there was a black hand manipulation by the Wu people behind this incident, but judging from the timing of Kirito's betrayal, the possibility is very high.

Nangwa was ordered to crusade against the country of Tong. Just as he was assembling his army, the Shu people hurried to come again, and bluntly said that they were entrusted by the people of Wu. The people of Wu asked the envoy to convey to the people of Chu that according to the alliance recently signed between the two countries, it was enough to leave the matter of cutting Tong to the Wu army; After the Wu army captured Tongcheng, it would be handed over to the state of Chu intact.

Also present at that time were Zuo Sima Xu, Doctor Wu Chenghei (Nangwa's brother-in-law) and Shi Huang and others, Nangwa asked Shu Jiuren to go down to rest, pouted and said: "Wu Guoren is scared!" He Lu's general forces were concentrated on the border between Wu and Vietnam, thus creating an empty defense line in the west. They were afraid that our army would take the opportunity to invade eastward, so they sent Shu Jiu people to show goodwill. How should we deal with this? ”

Zuo Sima said: "I used to be Wu Guang's retainer and know his temperament very well. If someone thinks that He Lu is so weak that he shows favor to the people of Chu to seek safety, it is a big mistake! The people of Chu have already learned his bravery and boldness, and the people of Wu have also learned his cunning and ferocity; The soldiers hated the state of Chu to the core, and Sun Wu was cunning and changeable. Therefore, the people of Wu are showing us all illusions, and they are using various methods to test our reactions, understand our thoughts, and weaken our strength. We can't believe every word that Wu Guoren said, and we can't make plans and act according to their ideas. ”

Nangwa was obviously concerned about this, and he asked, "What should we do with the Master's wishes?" ”

Zuo Sima said: "The people of Wu should be informed: Tong State is a vassal state of Chu State, and the rebellion of Tong State should also be resolved by Chu State; If the Wu people abide by the treaty, they should keep their troops in Jiangdong and not interfere with the recovery of the Chu army. ”

Nangwana's still bad brain finally listened to the persuasion, but he still wanted to show his "superior strategic thinking", so he said: "I have considered all these situations, since the people of Wu have been studying us, why don't we take the opportunity to study them as well?" Moreover, the two countries have an alliance in advance, and we cannot be charged with 'actively undermining relations'. I think that it is a complete strategy to limit the number of Wu Guoren's troops and put our army in an advantageous position. ”

Zuo Sima said: "With Sun Wu here, a thousand people can also give birth to the effect of ten thousand people!" The people of Wu must not be allowed to cross the river! Nanwa did not allow him to continue to refute. Nangwa summoned the Shu people and asked them to tell the people of Wu that he accepted the kindness of the people of Wu, but also asked Lu not to mobilize troops for the affairs of the people of Chu, and to send at most one army - just like the people of Wu had harassed the state of Chu before.

Nangwa decided to march by water, and immediately ordered the ships to be assembled. Zuo Sima also persuaded: "The areas around Chao and Yongpu have complex waterways, changeable terrain, and rugged roads, which are ideal areas for the enemy to set up ambushes. For the sake of safety, I recommend attacking Tongguo by land through the Dabie Mountains. That road was wide and flat, and with the cities of Qian, Liuhe and Qunshu as its backing, it would definitely not be attacked by the Wu army. ”

Nangwa suddenly sank his face and flatly rejected the suggestion. It turned out that taking a warship was the usual way to go out in Nangwa, which was comfortable and convenient, and you could drink alcohol and enjoy the scenery at the same time. On the contrary, the overland march was slow and arduous; Ling Yin, who is usually pampered, can't afford that crime at all.

In autumn and September, the Chu State's fleet set off from the Zhugong Naval Army Base and went down the Yangtze River. Ten days later, the Chu army landed in the area of Yuzhang. Confidently stepping off the flagship, he stepped into his luxurious chariot with a glimpse of the shine.

On the other hand, the Wu people have been building a ship that is a little larger than an ordinary troop carrier since last year. In this way, each ship of the Wu people was actually forty percent more than the original number carried, and as a result, the scouts of the Chu State judged that the Wu army was only 10,000 based on the number of ships on the other side, but in fact there were 4,000 more people.

Wu's troop transports secretly unloaded 4,000 men to the nest, and the ships continued upstream and docked at Yuzhang. The 10,000 men of the Wu army landed on land, and the Chu army was stationed fifteen miles ahead at this time. The commander-in-chief of the Wu army was his brother Fu Xuan, and he sent an envoy to Nangwa, who designated a route for the Wu army to march, and then the two armies marched to Tong according to their respective routes and kept a certain distance.

Until the attack of the Wu army, the Chu army did not notice anything unusual for a moment, and the sergeant sincerely thought that this would be a joint battle of Wu and Chu that will go down in history. The people of Chu guessed half correctly, this battle was indeed recorded in history, but the result was that the Chu army was ambushed, was attacked by "friendly forces" before and after, and finally suffered a miserable defeat.

When the Wu army launched the surprise attack, Zuo Sima's camp was still a few miles away from the main camp, so it was outside the enemy's attack range (this was a precautionary measure taken by Zuo Sima). When Zuo Sima received the news that the main camp was being attacked by the enemy, he immediately divided the army into two groups, and led one by himself and his deputy to attack the back of the Wu army. Wu Jun was caught off guard, so he had to flee in embarrassment, and brought the noble man out of the line of life and death. Nangwa also lost his flashy chariot, and with his helmet tilted, his expression flustered and panting, he was surrounded by a group of men and fled into Zuo Sima's army.

After the defeat and flight of the Chu army, the Wu army combined forces to surround Chaoyi. Chaoyi Doctor Wang Zifan didn't do any military precautions at that time, he thought that the Wu army was fighting in coordination with the Chu army! As a result, the Wu army captured the nest within three days and captured Wang Zifan.

In this way, the state of Chu suffered the most humiliating defeat in history. The reason why it is said to be the most humiliating is because the people of Chu were played around by the people of Wu like fools from the beginning, and they were grateful to the people of Wu, calling them "close comrades-in-arms"; And I didn't notice it until the end.

Therefore, the people of Chu were actually defeated by the stupidity of the commander, and the people of Chu said angrily: "Ling Yin is purely a wine bag and rice bag!" His 'sac' really doesn't have a white surname! He really has no other ability than to ride on our heads! In the end, it is up to the detention doctor of the state of Wu (Zuo Sima was exiled to the state of Wu) to save our army! Did all the good people go to Wu Kingdom? Then he asked himself and replied, "That's right, He Lu used the Chu people to attack the Chu State, and Nangwa used the Wu people to resist the attack!" What kind of world is this! ”