In the first month of the fifth year of Wude (622), the god of war Liu Heimin proclaimed himself the king of Handong, and the day was made as the name of the year, and the capital was Zhouzhou. The people who asked him to go out from the farmland to do great things at the beginning of the divination all held important positions, Fan Yuan was the left Bu shot, Gao Yaxian was the right leader, Dong Kangmai was the secretary of the military department, and other people who followed him with merit were all given corresponding official positions, and Dou Jiande's position as a civil and military official was restored, and the laws and administrations all imitated the system formulated by Dou Jiande.

Liu Heimin talked to the hundred officials about leading the troops to fight, and his brave strategy was not only superior to Dou Jiande, but even not inferior to Li Shimin.

For this reason, a Hebei regime that fought against the Tang court re-emerged.

Liu Heimin never thought that after Dou Jiande was beheaded, he desperately just wanted to go home to farm, and when the crops had not yet grown vigorously in his hands, he fought a few battles with Tang Ting as if he was in the next world, restored the lost ground of his former boss Dou Jiande, and replaced his former boss to lead his subordinates and protect the country he had laid.

However, the dream must wake up after all, and the laughter must stop at the end, because he must continue to fight with the unwilling Tang Ting in a sober and serious manner, until one side completely lies down without the slightest resistance. Otherwise, their tug-of-war will continue for a long time, and all kinds of expenses will be a test for everyone.

Liu Heimin's hot potato made Li Yuan sleep, like sitting on pins and needles, and now it was time for him to come up with a killer weapon, otherwise this powerful opponent might kill him, because he deeply felt that Liu Heimin's guy was much stronger than Dou Jiande, and he didn't want Li Shimin to have too many merits to cover up the light of the crown prince Li Jiancheng, but at this juncture, he had to send Li Shimin to come forward to save the dangerous situation and turn things around.

In this way, Li Shimin embarked on the road of conquest again, took his younger brother Li Yuanji, went to Shandong, and tore Liu Heimin.

Liu Heimin was also ready to tear up with Tang Ting.

In February, Li Shimin, the king of Qin, led an army stationed in Weizhou and took the lead in capturing Huojia (present-day Huojia County, Henan), for which Liu Heimin abandoned Xiangzhou to defend his capital, Zhaozhou.

Then, Li Shimin captured Xiangzhou, and then confronted the city of Yuzhou across the river, and at the same time, Luo Yi, the governor of Youzhou, who had been beaten by Liu Heimin before, led his subordinates to cooperate with Li Shimin to carry out a brutal north-south attack on Liu Heimin.

Liu Heimin wanted to beat Luo Yi down first, and then tear Li Shimin, so he left ten thousand people's troops, let Fan Yuan stay in Zhaozhou, and personally led the soldiers to the north, and when he spent the night in Shahe County, he received a report that the Tang army was going to vigorously attack Zhaozhou.

It turned out that it was just Li Shimin who made a ghost, not really trying to attack Yuzhou, but just "teasing" them. Li Shimin secretly sent the general Cheng Mingzhen to put ten big drums on the ground two miles west of the city of Zhaozhou, so that people could use their strength to eat milk, and the drums thundered and shook the sky, and the surrounding ground was shaking. Fan Yuan, who was guarding the house, thought that the Tang army was going to storm Zhaozhou in a big way, so he sent someone to inform Liu Heimin in a panic, and Liu Heimin returned to Zhaozhou desperately to defend his capital. In addition, he arranged for his younger brother Liu Shishan and Xingtai Zhang Jun to lead an army of 10,000 to stop Luo Yi's troops.

Li Shimin's thunderous Liu Heimin's liver trembled, and he went back to Lieren County, where his army was defeated by Qin Qiong, a fierce general of the Tang Dynasty, and at the same time, his younger brother Liu Shishan was beaten by Luo Yi and fled back to Zhouzhou.