On July 15, Li Tao and Li Daozong led the Tang Dynasty. The main force of the army attacked Gaimu City from the west and north. After a fierce battle, Li Tao's troops took the lead in attacking the city, capturing more than 20,000 Goguryeo mouths and capturing more than 10 million stone of grain. The success of this siege made Don. The army seized a lot of logistical grain and grass, which made the Don. The army hardly had to continue to transport much food from the country, making the already unburdensome Tang. The further reduction of the army's logistical burden also made the Tang. The army had a stronghold in Liaodong. It can also be seen from the capture of Gaimu City that the Goguryeo people are deeply rooted in the strategic thinking of relying on the fortress and holding it for a long time, and the average food that an adult man can consume in a year is 7 stones, and the grain of 100,000 stones is almost enough for the soldiers and civilians in the city to consume for a whole year, and the Central Plains Army Dui wants to achieve a long-term siege in the environment of Liaodong is obviously extremely arduous, and the Goguryeo people have obviously made very thorough preparations in this regard after a long period of operation. Li Shimin, Taizong of the Tang Dynasty, ordered Gaimu City to be changed to Gaizhou.

Then, Li Tao led his army south and marched towards Liaodong City.

At this time, the navy led by Qiu Beard and Liu Renliang crossed the sea from Donglai and attacked Beisha City. The city is built on a hill and is steep on all sides, and only the west gate can climb it. Tang Dynasty. Cheng Mingzhen, the vanguard of the army, led his troops to arrive at the city late at night, and Wang Wen, the deputy commander, took the lead and led his troops to the city at the risk of death. On May 2, the city was stormed, and more than 8,000 men and women in the city were captured. The chief governor, Zhang Liang, also dispatched the governor Qiu Xiaozhong and other Yao troops to Yalushui to harass the last line of defense north of the capital of Goguryeo.

At the mouth of the Baijiang River, 100 Tang. The warships encountered more than 1,000 warships of the Baekje and Fuso navies, and a fierce naval battle took place.

These warships were mainly composed of the Fuso Japanese army, and they were a powerful naval force built by Emperor Tenchi (the eldest brother of the Imperial Brother) to carve up the Asahian Peninsula.

The Japanese navy numbered 42,000 and had more than 1,000 warships; Tang Dynasty. With 5,000 men and 100 warships, the army and navy fought a fierce naval battle at the mouth of the Baekje Baekgang River.

The generals of the Japanese army see Tang. The army only had 100 warships, despised the opponent, and thought that "we should be the first, and the other should retreat", and launched an attack on the Tang fleet with great momentum.

The enemy is outnumbered, but Liu Renliang is not flustered, his mind is calm, and a pair of Danfeng eyes are shining, and he calmly encourages Tang. Jun: "Don't panic, although there are a lot of small Japanese broken ships, how can they be the opponent of my tall and sturdy warships in the Tang Dynasty, and the Japanese are sending military merit and wealth to everyone, hahaha!" "Don. The soldiers of the army and navy were greatly encouraged and fought bravely to be the first.

Liu Ren waited for work and took the initiative later. Commanding the fleet to change formation, divided into two teams, left and right, skillfully outflanked and counterattacked, surrounded the Japanese army, and its ships collided with each other and could not maneuver, and the soldiers were in chaos.

Although Don. The military warships are at an absolute disadvantage in terms of numbers, but Datang's shipbuilding technology is superior to that of Fusang, with high and strong walls and excellent design. The quality of the armor of the Fuso soldiers was not as good as that of the Tang. Army, the Japanese army shot Tang with arrows. Army, wearing Mingguang armor Tang. The basic damage of the army sailors was not great, but the Don. Under the rain of military arrows, the Japanese soldiers and generals were often shot cold.

Because Liu Renliang was a good reader and knew about the "burning of Chibi", when he saw the Japanese warships crowded together, he immediately asked Tang to do so. The army launched rockets in succession, throwing fire with the wind, and for a time "the smoke rose to the sky, and the sea was red".

Tang Dynasty. The army fought bravely under the encouragement of Liu Renliang, the arrows were like rain, the Japanese army was defeated, burned to death and choked to death, plus countless abandoned ships and jumped into the water and drowned. The army died in siege. The Japanese warships suffered heavy casualties, many of them were ignited in a raging fire, the Japanese army was defeated, the sea was full of Japanese corpses, "the sea was completely red", all 400 warships were burned down, and the rest were all severely damaged, only more than 1,000 of the more than 40,000 Japanese navy finally ran back to Fuso proper, all the Japanese warships were burned or severely damaged, and tens of thousands of Japanese soldiers were killed or drowned.

Liu Renliang led the Tang Navy to take advantage of the victory and defeated the Goguryeo fleet in the waters near Pingyang, and the Angel Fleet led by Qiubeard Ke to cover the 15,000 Datang Navy troops who came by sailing ships later, and successfully landed in Pingyang, led by Liu Renliang, launched a fierce attack on Pingyang City.

After the defeat of the Baicun River, and the Fuso people thought that Tang. The army was going to attack Fuso, so it was in the Tsushima Strait. The defensive line was deployed, vigilant day and night, and the country was in great panic. The eldest brother of Fusang, the prince, was deeply afraid that the Tang Dynasty would attack Fusang itself, and spent a huge amount of money to build four lines of defense successively. Among them, Fuso built a "water castle" in Dazaifu in Kyushu. It is actually an earthen dam for defense, the dam is 1.2 kilometers long, 80 meters wide at the bottom, more than ten meters high, and a 5-meter-deep ditch on the outside. In order to be safe, Fuso moved the capital from Asuka to Omi Otsu Shrine.

The defeat of the Baicunjiang also deepened the class contradictions in Fuso. After this fiasco, Fuso's ambitions to expand his power on the Asahian Peninsula came to naught.

The first battle between the Tang and the Japanese ended in a resounding victory for the Tang Dynasty, and the defeated Fusang woke up from a dream to finally discover that its grass-like rabble was no match for a well-organized and well-organized empire. "Take the winner as a teacher and be with the strong" may have become the way of life of Fuso people since then. It began to learn from the master with an open mind, and later successively sent 19 groups of Tang envoys to cross the sea to cross the sea without avoiding difficulties and dangers, just like the total westernization of the Meiji Restoration in the nineteenth century, the Dahua innovation also made the whole country Tang, the Fusang of later generations, drank Tusu wine on New Year's Day, celebrated in the song of the Shangyuan Festival, looked at the Cowherd and Weaver Girl in the Qixi Festival, and climbed the height to appreciate the chrysanthemum on the Double Ninth Festival, these are the customs passed down by the Tang Dynasty.

On 20 July, Li Tao and Daozong led more than 4,000 cavalry to the city of Liaodong. Goguryeo Yuan Gai Suwen sent 40,000 foot cavalry to aid the defenders of Liaodong.

At this time, Don. The generals of the army felt that the enemy was outnumbered, so they advocated deep ditches and high fortifications, and waited for the main force to be assembled before attacking. However, Li Daozong, deputy commander-in-chief, believed that it was necessary to take advantage of the enemy's reinforcements to "come from afar and be tired" and take the initiative to meet the battle, "if you attack it, you will be defeated." Li Tao agreed, he said: "Our vanguard was sent to be responsible for sweeping the road for the emperor. Now the road is not clean, how can we hide. ”。

At this time, Ma Wenju, the general of the department, also took the initiative to ask for battle, and in the face of ten times the enemy, he was arrogant in front of the battle, and shouted: "If you don't meet a strong enemy, how can you show a strong man!" Riding a horse to charge the enemy formation, invincible.

As a result, the two armies fought under the city of Liaodong. After the Goguryeo army was assaulted by Ma Wenju, the army organized forces to fight back desperately, and the marching commander Zhang Junyi's troops encountered the counterattack of Goguryeo's superior forces, could not resist, and retreated. The military situation is unfavorable.

Li Daozong saw that Zhang Junyi's troops were in chaos, and immediately went to command in person, and after collecting the scattered soldiers, he rode his horse to look far away, and saw that the Goguryeo army formation had been disturbed by Ma Wenju, so he led Xiao to ride into the gap, entering and exiting left and right, which was overwhelming, making the Goguryeo army even more chaotic.

Yi Tao led the crowd to clash with him, and the Goguryeo army finally collapsed, and more than 1,000 people were annihilated.

On July 25, Tang Taizong Li Shimin personally led the six armies to cross the Liaoshui through Liaoze, at this time Tang Taizong Li Shimin encountered the same problem as Emperor Yang of Sui, when Liaoze was more than 200 miles in the mud, people and horses could not pass, Yan Lide, the captain of the engineering corps of the army, was barely able to pass the bridge, at this time there were still many bones of the Sui soldiers floating on the Liaoze, and Li Shimin of Tang Taizong ordered people to collect and bury them at that time.

After crossing the Liaoshui, Tang Taizong Li Shimin ordered the bridge to be destroyed, in order to show the soldiers their determination to fight against the water.