Yang Su led an army of 100,000 men by land and water to quell the rebellion in the south of the Yangtze River.

On the way to leave Chang'an and rush to Jiangnan to quell the rebellion, Yang Su immediately ordered the marching commander Shi to prepare detailed information for him about the rebellion in Jiangnan, carefully studied it with the generals in the army, and drew up a battle plan according to the different situations of the rebels.

Therefore, Yang Su first pointed his troops to Wang Wenjin, who raised troops against the Sui in the area of Huzhou, Jiangxi, and left Chang'an, and turned south when he left Tongguan in the east, abandoned his horse and boarded the ship in Jiangling, and led the Sui fleet with eight "Wuya" giant ships as the main force to leave the Hankou wharf, go down the river, and kill directly to Huzhou.

Wang Wenjin was originally a naval general in the Southern Chen Army, this time he rebelled, his subordinates gathered 20,000 naval soldiers, with hundreds of Qinglong warships, guarding the waterway from the middle reaches of the river to the lower reaches of the river, and already claimed to be the Son of Heaven, but since Chen Junfan of the Southern Chen clan was called the emperor in eastern Zhejiang, he respected Chen Junfan as the emperor and was canonized as the governor of the capital by Chen Junfan.

Before Yang Su left Beijing, Wang Wenjin received news from Chen Junfan's dispatch that the Sui Dynasty was likely to send Yang Su to Jiangnan to quell the rebellion. He had long heard that the Sui army led by Yang Su had repeatedly defeated the Southern Chen army in the battle of Chen, so he took precautions early: there were countless hidden piles in the water near the south bank along the Jiujiang River to the Juzhou River, and several small islands, tidal flats, and oases attached to the center of the river were built more than two underwater fences, intending to block the water army led by Yang Su in Jiangxi.

After Yang Su sent a scout to find out that Wang Wenjin's rebels were laying hidden piles along the south bank of the river and building a large scale of water barriers, he immediately changed the route of the march and ordered Li Che to lead 10,000 horses to bypass Jiangxi by land, and instead cross the river by boat from Anzhou downstream, and first launched an attack on Wang Wenjin's rebels by land.

Later, taking advantage of the opportunity that Wang Wenjin's attention was attracted by Li Che to the land route, he ordered his naval army to take a grasshopper boat to avoid the other party's hidden piles in the water along the south bank, and directly launched a front and rear attack on it, which defeated Wang Wenjin and was forced to abandon Huzhou, and wanted to lead the remnants to flee to eastern Zhejiang to defect to Chen Junfan, but on the way, he encountered the Sui Junyu Wenshu department, and Wang Wenjin himself was captured alive by the Sui army.

After cooperating with Li Che's army to defeat Wang Wenjin's main force, the naval army under Yang Su immediately turned around and launched an attack on more than a dozen rebel fences in the river, and persuaded the defenders in these barriers to surrender without much effort, and at the same time sent people to clean up the hidden piles in the water along the south bank, so that the main force of the fleet could smoothly pass through the middle waters and enter the downstream area where rebellions were frequent.

In the core area of Nanchen's rule in Jiangsu and Zhejiang, the main rebels had three routes: the west road was led by the rebels led by Cai Daoren, a native of Le'an, who once occupied Jiangshan and other places in the east of Jiankang City, directly threatening Jiankang City; The east side of the road is the rebel army led by Li Ling, a native of Wuzhou, who gathered the remnants of Xiao Yan's uncle and nephew, a total of about 30,000 soldiers and horses, captured Wuzhou City, and used it as a stronghold to echo the rebels in the west and south, supporting each other, and making noise for a while; The rebels led by Gao Zhizhi, a Huiji man, were the first to support Chen Junfan as emperor, and they were the leaders of the main rebels in the three routes, and the number of soldiers and horses is unknown.

Yang Su wanted to sweep down the Jiangnan rebellion before Yang Guang arrived in Guangling, so after breaking through the rebel defense line in the middle reaches of the river, he immediately divided his troops into two routes and launched a fierce attack on the western, eastern, and southern rebels: he personally led the main force of the naval army, with Li Che and Lai Hu'er as the vanguard of the two armies on the waterway, and after annihilating the rebels along the Cai Daoren Road, he joined the Sui army of Yuwenshu and attacked the rebels on the East Road led by Li Ling; At the same time, Shi Wansui, the commander of the army, led 8,000 elite soldiers from Huzhou to the southeast and marched straight into the area of Huiji, where the rebels were stationed on the South Road, to clear out the rebels along the Gao Zhizhi Road.

Cai Daoren, the leader of the rebels on the Western Road, was originally a monk and a Taoist priest, but he joined the Southern Chen army when Chen Shubao forced monks, nuns, and Taoist priests to serve before the death of Nanchen, and became a low-level general in the army. Later, when he saw that the rebels in various parts of the Yangtze River had rebelled, he was not to be left behind, so he gathered thousands of men and horses to rebel around Jiankang, intending to lead the army to capture Jiankang, loot a handful, and flee south to Lingnan to live a free life.

If the leader intends to do so, it is conceivable how strong and weak the thousands of rebels under his command are.

Taking advantage of the resurgence of the beacon fire in Jiangnan, when Yu Wenshu, the general of the Sui army who stayed in Jiangnan, led his army out to quell the rebellion, Cai Daoren led his party to launch several bluff offensives against Jiankang City, where the garrison was empty, and it was okay to capture a few towns on the outskirts of the city, but in front of the main force of the vanguard of the Sui army led by Li Che and Lai Hu'er, they were a group of rabble, and they couldn't afford two or three rounds, so they scattered. Cai Daoren was also caught by the navy army under the command of Laihu'er when he was escaping from the water, and escorted back to the Chinese army to hand over Yang Sufa and dispose of it.

Since Yang Su left Chang'an, until he successively pacified the two large-scale rebels of Wang Wenjin and Cai Daoren of Jiangshan, it took less than half a month before and after, and the time of the two armies was only two or three days.

However, in the process of marching to clear Li Ling's rebels on the East Road, Yang Su encountered a strong opponent, so that he almost capsized in the gutter and was defeated by his men.

This matter also starts with Li Che and Lai Hu'er, the two pioneers of the Sui army, defeating the rebels of Cai Daoren on the West Road, and meeting with the Yuwen Shu Department in Shajiawu, thirty miles west of Wuzhou City.

Before Li Che and Lai Hu'er led the army to join Yuwenshu's department, Yuwenshu had led the army to annihilate more than a dozen rebels active in Jiangsu and Zhejiang, and was preparing to launch a frontal attack on Wuzhou City occupied by Li Ling's rebels.

Just when the three of them returned to the tent and fell asleep, Li Ling in Wuzhou City sent a group of men and horses to steal the camp and rob the village, not only set fire to the Sui army's heavy grain, but also a black shadow took advantage of the chaos in the Sui military camp to sneak into Laihu'er's sleeping tent, holding a bright sharp knife in his hand, and slashed directly at the top of Laihu'er's head who was sleeping.

When the sharp knife in the assassin's hand was about to slash at his neck, he suddenly turned over, causing the assassin to stab him with a knife, and the sharp knife went straight into the depth of Laigo'er's left shoulder.

Laihu'er screamed in pain, turned over and sat up, and when he looked closely, the tent was empty, and only the sharp knife stuck in his shoulder showed that he knew that someone had come to stab him.