The two armies fought hard in Luoyang City, Wang Shichong and Li Shimin fought in person, the leaders of both sides went to the battlefield to fight, and the soldiers naturally had a very high fighting spirit, which shows how cruel the scene of the two sides was fighting and killing.

The casualties caused by both sides were very heavy, and Li Shimin was also blessed with a great life, and he was almost killed, so that he had no chance to return to Chang'an, fight with the crown prince Li Jiancheng, and become the Tang Taizong who had been glorious for thousands of years. God once again blessed Li Shimin, and he is still alive and well. His general Duan Zhixuan was captured by the enemy, and finally with his own wisdom and wisdom, he ran back, which shows that the Tang army was really beaten by Wang Shichong!

However, Wang Shichong was even more miserable, his infantry was beaten by the Tang army and could not enter the city, so they fled south in panic.

The Tang army pursued the victory, pursued and killed several thousand people, and captured more than 5,000 people.

Wang Shichong saw that the opponent was too ferocious, so he hid in Luoyang City, and never dared to go out of the city again, but just surrounded the city and waited for Dou Jiande's rescue.

Dou Jiande's guy replied that he would come to rescue him, but he didn't show up in time, this guy is really hateful, since he promised to save him, he came to save him as soon as possible! He is now restless, and his days are like years.

In March of the fourth year of Wude (621), when Wang Shichong was shivering, Dou Jiande, who was waiting for him and the Tang army to be defeated, finally set out to save him, he couldn't wait for the Tang army to completely destroy Wang Shichong, and it would not be so beneficial for him to go to war. When they both had to fight for endurance and force each other, he slowly took the soldiers and horses, leisurely cleaned them up, and then chewed and spit them out slowly, and the world was his.

With such a long-cherished wish, Dou Jiande personally led his main force Xia Army to open Luoyang, with a strength of more than 100,000, known as 300,000.

On the way to Luoyang, the counties that the Tang army had finally occupied were conquered, and for the Tang army, Dou Jiande was really hateful, and it was not so easy for them to rush forward until outside the Tiger Prison Pass on the east side of Luoyang, because Dou Jiande met his nemesis - Li Shimin.

Originally, Dou Jiande led the army out of the nest, all the way majestic, everywhere he went, the insects and birds would panic, the Tang army was tired from a long battle, and he was so frightened that his liver trembled, and even Qu Tutong, Xiao Yu, Feng Deli and other important ministers and generals were afraid of the fierce Xia army, and hurriedly asked Li Shimin to temporarily avoid the edge, to put it bluntly, it was to temporarily shrink up, and it was important to save his life.

Li Shimin was born with sharp eyes, saw things uniquely, and did not dare to die, and was not afraid of Dou Jiande's Xia army, which was known as 300,000, because he saw a terrain that was favorable to him, which could give him a chance to win in an unfavorable situation.

Li Shimin thought that the Tiger Prison Pass was easy to defend and difficult to attack, and the Xia army had no way to meet Wang Shichong in the short term, this was a good opportunity for each breakthrough, and it must not be lost, so he said to the general who was frightened by Dou Jiande: "Wang Shichong lost his troops and hid in Luoyang City, the food must be almost exhausted, and we don't have to spend energy to attack, we can sit back and wait for him to be defeated." Dou Jiande conquered the county all the way, full of confidence, the generals were proud, and the soldiers were tired, and we occupied a good position like the Tiger Prison that was easy to defend and difficult to attack, which was regarded as choking his throat. If he ventures a decisive battle, we can easily defeat him; If he hesitates and does not come to the battle, in less than ten days and half a month, Wang Shichong himself will be defeated. After the city was broken, our troops increased, and the morale of the army naturally doubled, and the defeat of two enemies at once was in this battle. If he did not march quickly, Dou Jiande would enter the Tiger Prison, and the surrounding cities would be attached to him, and he would definitely not be able to hold on; When the two enemies join forces, the forces will inevitably be strong, how can there be an opportunity? Therefore, we must not only fight the battle of Tiger Prison, but also win. ”