Emperor Yang Di was arbitrary and self-righteous. He didn't like the courtiers' remonstrance and killed many senior officials, which made the courtiers afraid to tell the truth and alienated the ruling class. Yang Di's cruel exploitation and oppression forced the people to rise up and set off a wave of uprisings all over the country.

During the Second War to Resist US Aggression and Aid Korea, Yang Di sent Yang Xuangan to supervise the transportation of grain and grass. Yang Xuangan's father, Yang Suyuan, was Yang Di's confidant and helped him seize the throne. Later, he was suspected and died sullenly. Yang Xuangan was very dissatisfied with Yang Di, and wanted to overthrow Yang Di while the world was in chaos. Yang Xuangan launched an uprising of 8,000 migrant workers to transport grain and grass, but because no one gave him advice, he invited his old friend Shi Biao as a counselor.

Shimi's ancestors were nobles in the Northern Zhou and Sui Dynasties. When Shi Biao was a teenager, he worked as a bodyguard in the palace in Yang Di. Yang Di dismissed him because he was so clever that he thought he was dishonest. After returning home, he made up his mind to study and become a learned man.

Once, he rode an ox to see his friend, sat on the back of the ox and was still reading. He happened to meet Premier Su Yang, and they started talking. Su Yang thought the young man was very ambitious, so he introduced Shimi to his son Yang Xuangan and said to him, "You can talk to Shimi about something important in the future." Yang Xuangan uprising, I went to ask Shi Mi: "I want to overthrow this tyrant, I don't know how to act?"

Shi Mi said: "From the current situation, there are three strategies to overthrow the tyrant. The best policy is: the tyrant is attacking North Korea, and we will send troops north to cut off his retreat. He has no food and grass, and his morale fluctuates, which will naturally be defeated; The middle strategy is to seize Chang 'an and crush the tyrant's hometown. If he comes back, we can risk sticking to it and turn it into a base during the inspection; The best way is to take Luoyang, the eastern capital, nearby and give the tyrant a shock. "

Yang Xuangan was eager for success and thought the first two strategies were too troublesome, so he chose the next one. Immediately sent troops to Luoyang and won several battles. Many peasants demanded to join the Rebel Army, and the ranks quickly expanded to100000.

Yang Di received an urgent document, and immediately sent general Yuwen Shu and others to attack Yang Xuangan separately, which soon wiped out the uprising team and killed Yang Xuangan.

Shi Biao took advantage of the chaos, but the loyalist searched closely and soon caught him. On the way to Yang Di Barracks, Shi Biao discussed with several other arrested people and gave all their things to the soldiers guarding them. They escaped while they were busy drinking and having fun and the guards were lax.

Although he was temporarily out of danger, hiding in Tibet was never the way, so Shi Mi decided to go to (now East of Huaxian County) to join a relatively strong rebel army.

This rebel army is based in Wagangzhai, and its members are mostly fishermen and hunters who are good at using long guns, as well as some poor farmers who are brave and good at fighting. Zhai (zhái) Jean, the leader of the Wagang Army, is brave, courageous and tolerant, and enjoys high prestige in the Wagang Army. He led the wagang army to attack the rich families in the government, and more and more people came to defect, and the ranks of the rebel army expanded to more than 10 thousand people.

After Shi Biao joined the Wagang Army, he helped Zhai Rang to rectify the team, and also actively contacted the insurgents from nearby ministries to persuade them to unite with the Wagang Army and obey Zhai Rang's command. Zhai Rang was very happy and trusted Shi Biao more and more.

Shi Biao encouraged Zhai Rang to do great things and suggested attacking Xingyang first to win. Yang Di sent general Zhang Xutuo with heavy troops to suppress. Shi Biao invited Zhai Rang to meet them head-on, while he set an ambush in the dense forest north of the Temple of Sea in Xingyang, and led the loyalist led by Zhang Xutuo into a trap and annihilated them all. Zhang Xutuo also became the sword ghost of Wagangjun.

Since then, the prestige of Wagangjun has greatly increased, and the prestige of Shi Biao has also improved. He not only asked his subordinates to be disciplined, but also set an example and lived a simple life, thus winning the support of Wagangjun.

After the victory against Xingyang, in the following spring, Shi Biao suggested that Zhai Rang take advantage of Yang Di's visit to Jiangdu and Luoyang, the eastern capital, to attack Luoyang immediately. Unexpectedly, it was discovered by the imperial court and strengthened Luoyang's defense force. Shi Biao immediately changed his plan and suggested to attack Xingluocang near Luoyang (now northeast of Gongyi, Henan Province) first, and won a great victory in World War I.

Xingluocang was the largest granary in Sui Dynasty. After being conquered by Wagangjun, he immediately reclaimed land to fill his hunger. People who are hungry all the year round flock to the granary from all directions. When they received the food, they had tears in their eyes and were full of gratitude to Wagangjun.

Poor peasants joined the Wagang Army one after another, and Meng Jean, Hao Xiaode and other rebels also joined them. The wagang army quickly grew to hundreds of thousands of people and occupied most counties and cities in Henan. At this moment, Zhai Rang felt that his ability was inferior to Shi Biao, so he gave him the position of leader. After Shi Mi took over the Wagang Army, the founding name was Wei, and he was promoted to be a marshal of the March. This regime is called "Marshal Wei Gongfu on the March".

While reorganizing the internal organization, Shi Biao published xi, denouncing Yang Di's crimes and calling on the people to rise up and overthrow the Sui Dynasty. He also used a large number of officers and generals of the Sui Dynasty, which caused dissatisfaction among some former rebel ministries. In order to consolidate his position, Shi Biao arranged thugs to design and kill Zhai Rang. Since then, there has been a serious division within the Wagang army and it has begun to decline.