As soon as the first day passed, the Tang Dynasty entered the busy new year, Gao Buer also said goodbye to Li Yuan and returned to Hangzhou, according to the discussion with Li Yuan, the army was divided into two, Hangzhou he left 60,000 horses, and the rest went north to Chang'an and other emperors.

Zhang Zhongping was a ranger before, and he couldn't stand the rules and regulations of the court, so he resolutely resigned from the official title, and finally Li Yuan named him the governor of the Zhou Palace, and let him protect Gao Buji.

Just when everyone in the world was rejoicing at the advent of peace and prosperity, Dou Jiande's old general Liu Heimin rebelled again.

Before Liu Heimin thought that Dou Jiande was avenging in the name of rebellion, he rebelled in Hebei, and with Dou Jiande's good reputation in Hebei and Shandong, he quickly recovered all the territory during the Dou Jiande period, and was later defeated by Li Shimin with his troops, and his younger brother Liu Shishan fled to the Turks.

Now, with the help of Turkic soldiers and horses, the brothers have returned to Hebei again to raise troops against the Tang Dynasty.

When the news of Liu Heimin's rebellion reached Chang'an, Li Yuan immediately ordered the crown prince Li Jiancheng and the king of Qi Li Yuanji to lead troops to quell the rebellion, and at the same time transferred Liu Hongji, Qin Qiong, and Cheng Yanjin, the generals of Li Shimin's Tiance Mansion, to the two of them to obey their orders.

Li Shimin was resentful, but he still put the overall situation first, and asked the lieutenant general to obey orders with his heart and destroy the enemy as soon as possible.

Li Jiancheng and Li Yuanji were afraid of Liu Heimin's prestige and hid behind to command.

Wei Zheng saw what kind of line he could do, so he said to Li Jiancheng: "Your Highness, now that we are strong and strong, it is a great opportunity to make meritorious contributions, how can you hold back?" ”

Li Jiancheng thought that Wei Zheng's words were ugly, and said unhappily: "In your opinion, what should I do?" ”

"Your Highness should go to the front line in person and lead the troops to break the enemy, which can not only boost morale, but also win the hearts of the old generals of Tiance Mansion, and at the same time get the support of Shandong scholars, which will be very helpful for you to inherit the throne in the future."

"Bold Wei Zheng." Li Yuanji, the king of Qi, scolded: "Who doesn't know that this Liu Heimin is a good player, my second brother doesn't want to face it directly, Luo Yi can't please him under him, and now you let my brother go to face him, what kind of heart do you have?!" ”

Hearing Wei Zheng's words, Li Jiancheng was a little tempted, he was different from Li Yuanji, at the beginning of following Li Yuan's army, he was also torn and killed on the battlefield like Li Shimin, but later Li Yuan established himself as the king, and Li Jiancheng had fewer opportunities to send troops after becoming the prince, so he was overshadowed by Li Shimin.

Li Jiancheng stopped Li Yuanji, who was arguing with Wei Zheng, and said: "Fourth brother, don't say much, what Wei Zheng said also has some truth, and now Li Shimin's military achievements are too great, if we can win this battle, and then take the opportunity to win over a group of Tiance Mansion generals, it will be very beneficial to us." ”

Wei Zheng saw that the prince was moved by his own words, so he gave advice to the prince, and asked Qin Qiong and Cheng Yanjin to take the men and horses to Weizhou to fight against Liu Shishan, and the prince and the king of Qi led other generals to personally confront Liu Heimin without fighting, and waited for Qin Qiong's people to defeat and send troops to fight Liu Heimin.

Li Jiancheng nodded in agreement.

Liu Heimin saw that the Tang army was fierce, so he said to his younger brother Liu Shishan: "This time you and my brother returned to Hebei again with the help of Turkic soldiers and horses, and the people of Hebei did not welcome us as much as before, probably because it was the Turks who helped us, and the land of Hebei was deeply poisoned by the Turks, so we need a big victory to boost the hearts of the people, and Weizhou will be handed over to you." ”

Liu Shishan patted his chest and promised: "Big brother, rest assured, the city is in the people, and the city is destroyed and people are dying." ”

After all, Liu Heimin was born in the common people, although he values fame and fortune, but he is also very righteous, and said to Liu Shishan: "That's not necessary, it's really impossible, let's just withdraw, if not, we will return to the Turkic territory, and it is okay to be a horse thief, take care of your life." ”

Liu Shishan hugged his fist at him, indicating that he knew, and then led the people to Weizhou.

Where would Liu Shishan be Qin Qiong and Cheng Biting Jin's opponents, he was soon defeated by Qin Qiong and Cheng Biting Jin, and captured Liu Shishan alive in front of Li Jiancheng, Li Jiancheng was overjoyed, and personally asked for credit for Qin Qiong and Cheng Biting Jin, in order to show friendship. The generals of Tiance Mansion saw the small actions of Li Jiancheng and Li Yuanji in their eyes, and planned to accept merit and not win it over.

Then Wei Zheng suggested to Li Jiancheng: "Now that many of Liu Heimin's subordinates have defected to the Tang Dynasty, and the enemy's army is unstable, His Highness can release some prisoners of war and kindly persuade them to go back and break Liu Heimin's military heart, so that Liu Heimin can be captured." ”

Li Jiancheng adopted Wei Zheng's advice, and while personally doing the work of taking prisoners, he also ordered Liu Hongji, the general of Tiance Mansion, to lead the main force to attack Liu Heimin.

Sure enough, due to the lack of food and grass in Liu Heimin's army, coupled with the rumors that someone was spreading in the camp that his side was surrounded, Liu Heimin's army was even more disheartened, and from time to time there were people who escaped.

In the first month of 623, when Liu Heimin fled to Raoyang, there were more than 100 people left under his command, who were sleepy and lacking horses, and had no food, so they had to go into the city to find food.

Rao Yang assassin Shi Zhuge Dewei heard that the traitors had fled into the city, and the thieves who considered it were fierce and his own manpower was insufficient, so he ordered someone to do something in Liu Heimin's meal.

The hungry Liu Heimin and his group saw that they had something to eat, so they couldn't take care of anything else, but they were all fascinated, and Liu Heimin was sent to Li Jiancheng by five flowers. Li Jiancheng saw that Liu Heimin, who was afraid of his edge, was captured by him, and was overjoyed, and promoted Zhuge Dewei to follow him, and then the army showed off its strength and returned triumphantly.