In the fifth year of Wude (AD 622), Li Shimin led Tang Jun to defeat Liu Shishan and Zhang Junli of Liu Heita and dominate Hebei, and then the army marched into Mianzhou, Liu Heita's lair.

At the beginning of March, Li Shimin and Yi Li joined forces outside Mingshui. Liu Heita is like a trapped animal. He chose to die in peace, but he was born in silence. In order to fight to the death, he challenged Tang Jun many times. However, Li Shimin's strategy was to watch the fire from the other side, and he couldn't hold on to it in the light. He secretly sent Indiana Jones to cut off Liu Heita's route for providing foodstuff.

Li Shimin this recruit enough unique, want to let Liu Heita self-defeating, to this, Liu Heita used "throw a brick to attract jade" in the 36 plan. The bricks he threw were elegant and virtuous. On March 1 1, Liu Heita was appointed as the left servant, and then the army held a big banquet to show that he was not short of food, and secondly, Li Shimin was brought out as a "jade". As a result, instead of attracting Li Shimin, he attracted Li Shiqi, a general under Li Shimin (formerly known as Xu Shiqi, who was named Li by Li Yuanci after the Tang Dynasty). Li Shiji thought it was an excellent opportunity to attack the camp, and the result was exactly what Liu Heita wanted. Li Shiji failed to steal the camp and lost the battle.

Next, Li Shiji fully carried forward the spirit of not abandoning and not giving up, and attacked the camp again two days later, and the result was still a mess. After hitting the wall one after another, Li Shimin ordered: "Anyone who goes out without authorization will be killed."

Therefore, Tang Jun failed to persist. In order to solve the problem of food and clothing for soldiers, Liu Heita sent troops to transport grain from Hebei, Peking, Cang, Ying and other places. They walked hand in hand and were discovered by Cheng Mingzhen, a subordinate of Li Shimin. General Cheng launched a surprise attack with thousands of soldiers, sank all the grain ships and burned all the grain trucks. As a result, Liu Heita's army gradually ran out of food.

After this round of PK lottery, Li Shimin, who learned from a pit, estimated that Liu Heita was running out of food and would definitely come to Tang Jun to seek a decisive battle, so he sent people to build a dam in the upper reaches of Mingshui. He instructed the officer guarding the dam to say, "When I engage the enemy and send a special envoy, you will tear the dam immediately."

On March 26th, Liu Heita went out and rode twenty thousand soldiers to Surabaya, next to the Tang army camp.

Li Shimin deliberately delayed the playing time, and waited until Tang Jun had lunch before Tang Jun went out. He personally led the elite cavalry to attack the cavalry in Liu Heita, and the decisive battle began. Both sides tried their best to send elite troops, and the battle was deafening and played in darkness. After several rounds, it was tied.

Wang Xiaohu, Liu Heita's close friend, is a smart man who can fight and fight. Suddenly, he found that Li Shimin and the main generals were gone, and he knew that the situation was not good. He immediately demanded that Liu Heita withdraw. As soon as Liu Heita waved his hand, he shouted out the word "withdraw", and he saw an avalanche, and the water soared, more than ten feet deep. Liu Heita's army in the last World War was caught off guard, and finally it was in flight, killing more than 10,000 people and drowning thousands.

Liu Heita and Fan Yuan led two hundred riders to flee to Turkey, and all parts of Hebei were pacified by Tang Jun.

Li Shimin immediately led the army south to suppress Xu Yuanlang, but the helpless Xu Yuanlang failed to save the day. In the end, he repaid Liu Heita's kindness by dying in battle.