After the marriage decree of the king of Qi went down, several major events soon happened in the court, Luoyang Wang Shichong frequently provoked, and the Turkic side was also frequent, Gaozu sent the second son Li Shimin to point to Luoyang, and sent the prince Li Jiancheng to garrison troops in Puzhou to prevent the Turks from attacking.

"Guanyin, I will send troops to Luoyang in the near future, and Luoyang is the ancestral land of your eldest grandson's family, your brother and eldest grandson Anye They all live in Luoyang, if Wang Shichong ......" Before leaving, when King Qin said goodbye to his wife, he mentioned the eldest grandson Anye by the way.

"Erlang, in the face of the righteousness of the family and the country, personal feelings are insignificant, as your wife, Li Tang's princess, I should practice more and set an example for the people of the world, if Wang Shichong really threatens you with them, please don't worry about me, just act according to the military situation and national law." Princess Wang Sun spoke calmly.

"Guanyin maid ......" Li Shimin looked at his wife's calm and soft eyebrows, and couldn't help but reach out and gently caress it, how the eldest grandson Anye treated the Gao family and son back then, everyone in Luoyang knew about it, and no one knew it.

If Wang Shichong really used them to blackmail the Tang army, and Li Shimin, as the commander-in-chief, completely ignored their life and death, I am afraid that someone will use this as an article to attack the eldest grandson princess and the eldest grandson Wuji.

"Erlang doesn't have to worry about me, although the second brother is not good to our mother and son, I have no hatred for him, without him, just because half of the blood in his body is the same as mine, all from my father, for my father's sake, I don't care about everything he has done."

"If it weren't for the general interests of the country, even if he committed a serious crime, I would have interceded for him even if I was punished by my father, but at this time, the matter involves Li Tang Jiangshan Sheji, and you must not be affected in any way because of him."

"Don't say it's him, even if I unfortunately fall into the hands of the enemy and the enemy tries to use me to blackmail the prince, I hope that the prince will not suffer any compromise because of this." The eldest grandson, Princess Zhengrong, replied.

"......" Li Shimin.

On the tenth day of the seventh month of the third year of Wude, the army led by Li Shimin, the king of Qin, opened to Luoyang in the scorching heat, and after the troops came to Guzhou, Li Shimin led the troops to be stationed here, and sent the vanguard general Luo Shixin to surround Cijian.

Wang Shichong heard that Xun immediately led an army of 30,000 to the rescue, but he did not expect that on the way to come, he happened to bump into Li Shimin, who led a light horse to investigate the military situation, Wang Shichong was overjoyed, and immediately ordered his generals to capture Li Shimin alive at all costs.

There were only a few people around Li Shimin, and they were not at the same level as Wang Shichong's soldiers and horses, and they were soon forced to a place with steep terrain.

After coming here, Li Shimin absolutely counterattacked, regardless of life and death, broke away from Shan Xiongxin's interception, and took the opportunity to capture Wang Shichong's general Yan Qi.

Using him as a shield, he ran while fighting, and finally left the battlefield and returned to the camp, where he was covered in blood and dust on his body and face, so that the generals defending the city could not recognize him and turned him away.

It wasn't until Li Shimin took off his helmet and opened his mouth to speak that the guards recognized his identity, opened the city gate, and let him enter the city.

The next day, Li Shimin led an army of 50,000 and rushed to Cijian, Wang Shichong had already learned his strength yesterday, and he was unwilling to engage him in Cijian, so he could only let the Cijian defenders withdraw to Luoyang.

After Li Shimin took Cijian, he sent Shi Wanbao, the chief of the marching army, to occupy Longmen from Yiyang, Liu Dewei besieged Hanoi to the east in Taihang, Wang Junkuo cut off his grain route, and then sent Huang Junhan to attack Luocheng from Heyin and conquered it in one fell swoop.

Due to a series of tyrannies after Wang Shichong ascended the throne, the people south of the Yellow River all applauded the arrival of the Tang army.

Wang Shichong's subordinates surrendered one after another, and then Li Shimin led a large army into the north of Luoyang, approaching Luoyang City, it was October, Luoyang surrounding counties fell into the hands of Li Tang, Luoyang City became a lonely city.

Seeing that the situation was unfavorable, Wang Shichong was ready to make peace with Li Shimin, and the two sides were ready to negotiate across Luoshui, Li Shimin was determined to win Luoyang City, so it was naturally impossible to make peace with him under the condition that the situation was very good.

Hearing that Wang Shichong was going to negotiate, he was lazy to come forward, and only sent the Sui general Yu Wenshi to talk to Wang Shichong, but the result was self-evident, and the talks collapsed.

If the peace fails, in the end, we still have to meet each other, but Wang Shichong can't beat others, so he can only wait for the opportunity secretly.

Luoyang City is easy to defend and difficult to defend, Wang Shichong still has 100,000 troops in his hands, and it is not realistic for Li Shimin to want to attack strongly, and the soldiers and horses of the two sides are stalemate for a while.

On October 20, Li Shimin took 500 cavalry to the Mausoleum of Emperor Xuanwu of the Northern Wei Dynasty to inspect the battlefield, I don't know how the news leaked out, he just arrived at Emperor Xuanwu's Imperial Mausoleum Mountain, Wang Shichong led 10,000 cavalry suddenly appeared, surrounded him.

Wang Shichong's fierce general Shan Xiongxin raised his long lance and went straight to Li Shi, at this time Li Shimin was fighting with two black-faced generals, and there was no time to resist.

Seeing that Li Shimin was about to cross the horse, but at this time, Wei Chi Jingde rushed over, swept in with a lance, and picked Shan Xiongxin under the horse.

Then Wei Chi Jingde escorted Li Shimin out of the encirclement and returned to the army camp, leaving Wang Shichong to jump and sigh.

Li Shimin returned to the camp, quite annoyed, several times mobilized a large army, trying to attack Luoyang, but Luoyang City is impregnable, for a while and a half will not be able to attack at all, after several attempts to no avail, Li Shimin can only beat the drum to withdraw the troops, find another way.

Time continued to slide forward, and in the blink of an eye, in February of the fourth year of Wude, the Tang army entered the Qingcheng Palace and began to build a barracks, but the barracks had not yet been built, Wang Shichong rushed out from Fang Zhumen with 20,000 horses, and joined the main force on the other side, trying to crush the Tang army in one fell swoop.

Li Minmin, Li Yuanji, and Wei Chi Jingde immediately led the cavalry to rush up, and each of the three led a team to rush back and forth in Wang Shichong's army, as if entering a no-man's land.

Seeing this, the morale of the army behind them was greatly boosted, and they flooded up like a tide, and Wang Shichong was defeated, leaving thousands of corpses and prisoners, and retreated into Luoyang City, refusing to fight again.

Desperate, Wang Shichong could only ask Dou Jiande for help again, and in November last year, Wang Shichong had approached Dou Jiande and asked to deal with the Tang army with him.

Dou Jiande replied at the time that he was willing to send troops, but this person just talked and didn't practice, and promised to do well, but in fact he was unwilling to send troops.

Wang Shichong was angry, but he didn't dare to attack in this situation, so he could only ask for help again.

This time, Dou Jiande came quickly, Li Shimin originally planned to slowly infiltrate Luoyang City by digging underground trenches, but he didn't know that this plan had just begun to be implemented, and Dou Jiande came.

In March, Dou Jiande led more than 100,000 soldiers and horses to Luoyang, (known as 300,000), the Tang army was all shocked, and even Gaozu and a group of ministers who were far away in Chang'an heard that Dou Jiande was going to attack the Tang army with Wang Shichong, and their faces changed color with fright.

Not only did the imperial court ask Li Shimin to withdraw his troops, but even the generals under his command suggested that the king of Qin should lead his troops back to Chang'an to avoid the edge for the time being.

Li Shimin was not moved at all, he thought that after the war had been fought for so long, Wang Shichong's grain route was cut off by himself, and there was no replenishment, and now the grain is almost exhausted, the army and the people are centrifuged, and it is not far from breaking the city.