At the same time as Gao Buer and Li Zitong were fighting, Zhai Rang of Wagang, Henan Province also continued to send troops to capture the Quartet, because the Wagang army had generals such as Shan Xiongxin and Xu Shixian, so it was almost invincible.

In 616, Li Mi, who was born in the aristocracy, also defected to the Wagang army several times because of Yang Xuangan's failure to raise troops.

When Li Mi saw Zhai Rang, he said: "The king is strong and strong, I don't know if he has ambitions in the world?" ”

Zhai Rang heard that Li Mi was talented, and when he heard what he said, he asked, "Sir, do you have a good plan to help me?" ”

Li Mi said: "If the king has the heart to dominate the world, then he can't be satisfied with robbing the house, but needs strategic places, actively develop forces, and expand the influence of the Wagang army, so as to attract the world's heroes to vote. ”

Zhai asked with a big salute and said, "Please teach me, sir, I am willing to be the master of this tile with me." ”

Li Mi hurriedly excused himself and said: "Li Miwan doesn't dare to have this heart, if the king can trust him, I have a strategy for the king's reference." ”

Zhai Rang invited Li Mi to sit down and said, "Sir, please speak." ”

"Now that my Wagang army wants to conquer the world, we should first capture Xingyang."

"Why is that?"

"Xingyang is a strategic place in the Central Plains, to the east is a plain, to the west is the Tiger Pass, and the west of the Tiger Pass in Gong County has the largest granary Luokou Cang in the Sui Dynasty. As long as we take Xingyang, we can use this as a base camp to attack Luokoucang in Gongxian County, so that we can not only get a large amount of food and replenish our troops, but also approach Luoyang and take the opportunity to capture the eastern capital Luoyang. ”

"Once we can capture Luoyang, the eastern capital, then raise our arms and shout, unite all the heroes of the world, and overthrow the rule of Sui."

"Not bad."

"Okay, I'll let Shan Xiongxin and Xu Shiyun send troops to Xingyang and attack Luokoucang."

Xingyang Taishou detected the attack of the Wagang army, but the soldiers were insufficient and unable to resist, so he immediately wrote to Yang Guang and asked the imperial court to send troops to support.

Yang Guang received Xingyang's urgent document, and was shocked, if Xingyang missed, Luokoucang would immediately fall into the hands of the enemy, so that Chang'an's grain transfer would have a big problem, and it would be out of control at that time, so he immediately ordered Zhang Xutuo, the general who stayed in Luoyang, to lead troops to guard Xingyang.

Zhai Rang saw that Zhang Xutuo, a famous general of the Great Sui Dynasty, personally led his troops to come, and asked Li Midao: "Sir, this Zhang Xutuo is famous in the Sui court, I don't know what good strategy Mr. has to break the enemy?" ”

Li Mi said: "The king doesn't need to worry, this Zhang Xutuo is just a brave and unscrupulous person, and his courage is not as good as the king and General Shan, the king only needs to let General Shan meet the enemy head-on, let the queen feint, and then order General Xu Shitao to lead the troops to ambush near the Dahai Temple north of Xingyang, and when Zhang Xutuo arrives with the troops, the whole army will attack, and he will be able to kill Zhang Xutuo under the horse." ”

Zhai Rang applauded loudly and ordered Shan Xiongxin and Xu Shichang to act according to the plan.

Shan Xiongxin led the Wagang army to Xingyang City to call the battle, and Zhang Xutuo fought dozens of rounds, pretending to be defeated, Zhang Xutuo was really overjoyed, led the troops to chase, chased to the Great Sea Temple, Xu Shichang led the ambush out, Shan Xiongxin immediately turned the horse's head to kill back, Zhang Xutuo shouted fooled, but he couldn't get out, and more than ten rounds were cut by Shan Xiongxin under the horse.

The Wagang army took advantage of the situation to occupy Xingyang, and attacked Luokoucang at dawn the next day, transporting a large amount of grain to Wagang.

After this battle, Zhai Rang's trust in Li Mi increased greatly, and Li Mi also established prestige in the Wagang army, which also laid the groundwork for Li Mi to replace Zhai Rang in the future.

The news of Zhang Xutuo's defeat and death reached Chang'an, Yang Guang decisively couldn't sit still, Luokoucang was attacked and occupied by the Wagang army, and there was no grain to be transported to Chang'an, so it was inevitable that the situation in Chang'an would get out of control.

Lao Chen Yuwen recounted the class: "Now that Chang'an is surrounded by bandits, and Luoyang is surrounded by thieves, the minister very much agrees with His Majesty's will to take refuge in the south, and the minister suggests that His Majesty go straight to Jiangdu." Jiangdu is the wealth of my southern Sui Dynasty, and it is the land of fish and rice in the south of the Yangtze River, so His Majesty can sit in Jiangdu and command the army to quell the thieves. ”

Or the old minister knows my heart deeply.

Zhao Cai, the general of the left guard, objected: "And today, there are thieves and soldiers, Your Majesty should sit in Chang'an to preside over the world's major affairs. ”

However, Yang Guang's intention to go south had been decided, and he ignored Zhao Cai's suggestion at all, and ordered the Minister of Civil and Military Affairs to accompany him on a southern tour, so that the twelve-year-old imperial grandson Yang Yu stayed in Chang'an, and summoned General Zuo Yiwei to assist Yang Yu.

After the arrangements were made, Yang Guang led the civil and military officials and 160,000 troops to the south, to Luoyang, Fengxin Lang Cui Minxiang at the gate of the city, kneeling and admonishing Yang Guang not to go to Jiangdu, Yang Guang was angry, ordered someone to kill him, leaving the thirteen-year-old imperial grandson Yang Tong to stay in Luoyang, and the minister Wang Shichong assisted. A group of people slaughtered Benjiangdu.

When Yang Guangjunchen went all the way south to Jiangdu, Luo Yi, who was entrenched in the sixteen prefectures of Youyun, raised troops against Sui, and Lin Shihong, who was now in Jiangxi, also held high the banner of righteousness, and soon occupied most of Jiangxi and Fujian, and Li Zitong also sent troops south again and captured most of Jiangsu except Yuhang. The north was everywhere, and the ruling structure of the Sui Dynasty collapsed.