Taking advantage of the fact that Li Zitong and Shen Faxing were in full swing, Du Fuwei sent the left servant of Xingtai to shoot Fu Gongqi (Du's friend of life and death, when he was young, in order to survive, they stole food together) as the main general, Kan Ling and Wang Xiongdan (both of whom were Du's adopted sons, known as the great general and the little general in the army) as the deputy general of Fu Gongyi, and led thousands of elites to attack Danyang (now Danyang, Jiangsu) that Li Zitong had just captured.

Fu Gongyi crossed the Yangtze River to attack Danyang, captured Danyang in one fell swoop, and then marched and stationed in Lishui.

Li Zitong led tens of thousands of soldiers and horses to fight, vowing not to let this old opponent take advantage of him.

Fu Gongqi selected a thousand elite soldiers, holding a bright long knife as the vanguard, the light of the sword was almost blinding the enemy's eyes, and ordered a thousand people to follow, and said to the thousand people coldly: "Whoever has the slightest retreat, immediately beheaded." Then he led the rest of the men and horses, and followed closely behind the thousandth.

With such a harsh military law, naturally everyone moves forward bravely, especially the long knife formation of the forward, which makes the timid deserters advance without retreating.

Li Zitong faced a strong enemy, the phalanx advanced majestically, and fought to the death with the forward troops of Fu Gong Qi, and Fu Gong Yi attacked Li Zitong's phalanx with the left and right flanks, Li Zitong was defeated and fled in embarrassment.

Fu Gongqi didn't know how to trap the beast and fight, the dog jumped over the wall in a hurry, and chased the defeated soldiers, but was defeated by Li Zitong.

Fu Gongqi returned to the barracks in embarrassment, and the fortified wall did not fight.

Wang Xiongtan analyzed the situation and said smartly; "Li Zitong has no camp barriers, and now that he is victorious, he is getting carried away, so we can take advantage of his unpreparedness and attack him, so that we can catch him off guard."

Fu Gongyi was stubborn and did not take his advice.

Wang Xiongtan was even more stubborn, and at night he took hundreds of soldiers to attack Li Zitong, and took advantage of the wind to set a fire that would kill people, Li Zitong was caught off guard, and was defeated and scattered, and thousands of soldiers surrendered to Wang Xiongdan. Li Zitong had to give up Jiangdu and keep Jingkou, so all the Jiangxi area belonged to Du Fuwei.

This battle was a decisive battle between Du Fuwei and Li Zitong, which was related to the hegemony of Jianghuai, Du Fuwei won first and then lost and finally won all, dramatically breaking Li Zitong's main force ten times his own. In the end, the pleasing victory was all due to his adopted son Wang Xiongdan's flexible brain and boldness.

Soon, Li Zitong fled east to Taihu Lake, collected stragglers, and won 20,000 people. At this time, his territory was owned by Du Fuwei, and his current strength was far inferior to him, and he really had no confidence to win if he continued to fight with him, so he had to be ruthless to Shen Faxing, defeat him, and find a sense of existence for himself again. For this reason, he attacked Shen Faxing's old nest Wu Jun, and Shen Faxing was vulnerable and easily defeated.

Shen Faxing took hundreds of relatives to abandon Wu Juncheng and escaped, although the appearance of the escape was a little ugly, but he finally saved his life.

Li Zitong is happy again...... The army regained strength, and also occupied all the territory of Shen Faxing, east to Huiji, south to Wuling, west to Xuancheng, north to Taihu Lake, all owned by him.

For this reason, Li Zi moved the capital to Yuhang.

For this reason, Jianghuai basically has two major forces, Du Fuwei and Li Zitong, and their hatred for each other will be divided into winners and losers in the next cruel fight.

In November of the fourth year of De (621), Du Fuwei sent his right-hand man Wang Xiongdan to attack Li Zitong, and at this time, Fu Gongqi was pushed out of the core of the group.