In the battle of the state of Jin to destroy Wu, the army of the state of Jin attacked Wu like a bamboo, and it took only four months to capture Wu. The Jin Dynasty adopted yang hu's plan before his death. The soldiers were divided into six roads and attacked by land and water at the same time. Although Wu struggled to resist, he still failed, and hundreds of years of division since the end of the Eastern Han Dynasty were unified.

In 279 AD 1 1 month, Sima Yan adopted the plan prepared by yang hu before his death and sent 200,000 troops to attack Soochow in six ways: 1. General Zhenjun and the evil king Sima Zhou marched from Xiapi (now south of Pixian County, Jiangsu Province) to Tuzhong (now Chuhe River Basin, Anhui Province); 2. General Anton Wang Hun marched from Yangzhou (the state was ruled in Shouchun, Anhui Province) to Jiangxi (referring to the direction of Hexian County, Anhui Province) and left Hengjiang Ferry; 3. Jianwei General Wang Rong marched from Yuzhou (now southeast of Xuchang, Henan Province) into Wuchang (now Ezhou, Hubei Province);

4. General Hu Fen of Pingnan marched from Jingzhou to Xiakou (now Wuchang, Wuhan); 5. Du Yu, the general of Zhennan, marched from Xiangyang to Jiangling (now Hubei), and then went south to the Yangtze River and the south of Xiangshui to Jiaoguang; 6. General Wang Meng, General Guangwu and Tang Bin, the supervisor of Badong (now Fengjie, Sichuan), went straight to Jianye from Bashu to Hedong. With Qiu Jiachong as the viceroy, Yang Ji, the top scholar general, as the deputy, led the China army to help in Xiangyang; In the book, Zhang Hua served as the finance minister, always raising grain transportation.

The general operational intentions are as follows: Sima Zhou and Wang Hun pushed Jianye to contain Wu Jun's main force so that it could not reinforce the upstream; Wang Rong, Hu Fen and Du Yu captured the strategic points to the west of Xiakou, in order to coordinate the 80,000 land and water troops led by Wang Meng to go down the river; He ordered Sima Zhou and Wang Hunjun to take Jianye from the southeast.

This deployment was in line with the actual situation at that time, because there were more than 200,000 troops in Wu Dong. As far as the comparison of forces is concerned, the forces of the Jin army in the south did not have much advantage, but the forces of Wu Jun were scattered all over the Yangtze River and the south of the Yangtze River. In order to quickly destroy Wu, the Jin army had to divide and rule.

In the first month of 280 AD (the first year of Taikang), General Anton Wang Hun led more than 100,000 troops to March in the direction of Hengjiang (now southeast of Anhui County) and sent Chen Shen and others to attack Xunyang (now northeast of Hubei Wuxue). Chun Li, the general of the State of Wu, was sent to attack Yu Gong's Wu Jun department in Gaowangcheng (now southwest of Jiangpu, Jiangsu). On the 25th day of the first month, Chunli occupied Gaowangcheng, and was defeated. He pushed to the east of Hengjiang and seized the favorable crossing field.

At the same time, Chen, who joined the army, captured Yangse Township and defeated the goalkeeper. General Chen Dai of Wu and Zhu Ming of Pinglu led his troops to the Jin army.

In February, Sun Hao, the Lord of Wu, learned that King Xian of Jin was leading a large army south, and ordered the Prime Minister to command Shen Gulezi, the satrap of Danyang (now Nanjing, Jiangsu), Sun Zhen, the defender, and Zhuge Liang, the deputy military adviser, to lead 30,000 troops across the river to fight against the Jin Army. Zhang Zanjun went to Niuzhu (now quarrying in Dangtu North, Anhui Province), and Kuluo Keshen analyzed the situation of 8 Jin Army's invasion. He said, "Jin's water control army has been in Shu for a long time, and now it is pouring into the country. Wan Li will know that Yizhou people are going downstream.

I, the upper ranks of the army, will die, and the young and the young will be in power. I am afraid of the cities in Bian Jiang, and I will do my best to defend them. Jin's water army, as for this! "On this basis, Kurokoshen suggested to concentrate on quarrying and wait for 8 jin j to come to a decisive battle. If we can defeat Jin Jun, we can stop Jin Jun from crossing the river and recapture the lost land in the west.

If you cross the river and fight a decisive battle with 8 Jin Army, you will fail unfortunately, and the tide is gone. However, Zhang Biao believes that the demise of Wu Dong has long been seen by everyone, not just today. In this way, when the nomads from the army arrive, everyone will be afraid, and it will be difficult to organize an army again. Now 8 jin j has not arrived, cross the river and fight it, and there may be a chance of winning.

If you die in failure and die for your country, you will die without regret. If I can defeat the enemy in the north and flee, the prestige of our army will be greatly shocked. At that time, we will be able to defeat the enemies from the west by winning the victory and going south to meet them. If you wait for the arrival of the enemy according to your plan, I'm afraid the troops have escaped. Therefore, Zhang Yan was determined to lead the army to cross the river to meet 8 Jin Army.