The waterway had been blocked, so it had to be taken by land. The messengers of the Thunderbolt army went out day and night, and it took a lot of effort to pass through Pengshan County, which was occupied by the Mongols, and appeared in the city of Meizhou. It's just that Yu Dazhong was still immersed in eating, drinking and having fun during the Spring Festival, and he didn't take the warning of the Thunderbolt Army seriously at all. The messenger had no choice but to continue to Jiading Mansion to meet Yu Xing. Yu Xing had been in the army for a long time, and he had already discovered that something was wrong with the Mongolian army in the direction of Chengdu, but his arrogance made him dismissive. In Yu Xing's view, Jiading City is surrounded by mountains and rivers, and there are fortresses such as Ziyun City, Three Turtles and Nine Peaks City and Lingyun City, and its defense is no worse than that of Chongqing Mansion. During the nearly ten years since he became the ruler of Jiading, the Mongolian army has been defeated in several large-scale attacks, which is evident from this. After experiencing the last incident of his brother-in-law being detained, Yu Xing was polite to the Perak Army messengers, and even sent someone to escort them to Pujiang on the return trip.

The Chengdu Mongolian army really launched an attack as Ouyang Xuan expected. Together with the Mongol army coming from the east of Sichuan, they first took Jianzhou with their combined forces, and then waved their troops south to besiege Longzhou. The four counties of Longzhou are all on the east bank of the Min River, among which the county and Guiping county across the river from Pengshan City have long been occupied by the Mongolian army, and the Song army actually controls only Renshou County and Jingyan County, which are attached to the state city. These two counties are still large in population, and because of the abundant wealth and taxation of well salt, the defense is also strong, so they also thwarted many attacks by the Mongol army. It's just that this time the siege of Longzhou not only included the Chengdu Mongolian army Yelumaizhu department, but also the Wang Dechen department, the Mongolian Han army and the new annex army of Yang Dayuan's department from central Sichuan.

Yang Dayuan won the city guard in Langzhou, and surrendered the city for fear of death when Meng Ge's army was pressing. After the surrender of the Mongols, he actively acted as a pawn and led the army from Möngke to the battle. Successively persuaded the three fortresses of Yunshan City, Qingju City and Daliang City, and these three cities and Dahou City are all "Eight Pillars in Sichuan". This traitor destroyed half of the defense system of Yuyu Mountain City with the strength of one person, which is really hateful.

Under the combined attack of the three-way Mongolian army, the Song army of Longzhou frequently asked Yu Xing and his son for help. How did the father and son dare to attack when they saw that the Mongolian army was strong? Needless to say, the cavalry of the Yelumai Pillar Department was extremely strong, and the Mongol and Han troops of Wang Dechen's Department were also extremely tough, and even the new annexed army of Yang Dayuan's Department, which had just surrendered to the Mongols, was also highly motivated by the blessing of the "Convert's Fanaticism", and was eager to prove itself to the master with his military exploits. In fact, the Jiading army is safe to protect itself by fortifying the city, but sending troops to Longzhou to fight with the Mongolian army in the field is likely to be more auspicious. It's just that Yu Xing's father and son are guarding the fortified city, and in the eyes of the defenders of Longzhou, they can't save them when they see death. It is said that the Mongolian army has attacked Jiading many times, and Longzhou has sent troops to harass the Mongolian army's grain road, and some time ago he and Yu Dazhong attacked Pengshan City together, and I don't want this friendship boat to capsize! Angry that Longzhou greeted his ancestors for eighteen generations every day, and in desperation, he simply surrendered to the Mongols.

After taking Longzhou, the Mongol army marched south in three routes. Wang Dechen's troops and Yang Dayuan's troops continued along the east bank of the Min River to Jiading, while Yelumaizhu set out from Pengshan City and moved south along the west bank of the Min River, while the Mongol army sailed down the river to Meizhou City. These three Mongolian armies attacked together, and the fortresses along the way could not be stopped, and they were either destroyed or surrendered. Of course, these dock forts were only the appetizers of the Mongol army, and their first target was the city of Meizhou, which was attacked by the Mongol army on the west bank led by Yelumaizhu. Wang Dechen's troops and Yang Dayuan's troops did not attack the fortresses along the way, but went directly to Jiading City.

The Mongol cavalry under Yelumaizhu was extremely fierce, and it took only three days to clean up the dock fort outside Meishan City, and began to build a fortress to prepare for the creation of siege weapons. The Mongolian navy, supported by the cavalry and crossbow of the infantry on both sides, defeated the Meizhou naval army several times and destroyed and captured many ships. Yu Dazhong asked Yu Xing for help several times, but the reply he got was perseverance. At present, the Mongolian army is also attacking Jiading, and the strength is also very tight. In Yu Xing's view, Jiading is his foundation, and if he keeps Jiading, Meizhou can be recaptured even if he loses it. If troops are sent to rescue Meizhou, perhaps the Mongols are trying to lure the snake out of the hole. Since ancient times, the emperor's family has no family affection, and the same is true for a local emperor like Yu Xing, and the city and army are the things that Yu Xing values the most. It is said that Yu Xing has no shortage of sons, and the dozen or so concubines have also given birth to many sons for him.

Seeing that Lao Tzu was slow to send reinforcements, Yu Dazhong decided to smear oil on the soles of his feet - and slip away. Although he is a son-in-law and the legal heir of the family business, only the living have the right to inherit. The enemy is now, and life comes first. Today's emperor particularly respects science and requires the vigorous implementation of science "the king is the minister, the father is the son, and the husband is the wife", but what did these court people do? It's not the first set of people and the last set of people. Why do you enjoy all the glory and riches, and let me die at the hands of the Mongols? The more Yu Dazhong thought about it, the more angry he became, and immediately lied to the generals defending the city that he was going to Jiading to ask for help, and then he went out of the state government in the stunned look of everyone. This Yu Dazhong is not stupid, the Mongols are fast, and there will be more luck and less luck by land, so it is better to take advantage of the fact that the Mongols have not blocked the dock and go by fast boat. Going down the river, it only takes one day to reach Jiading.

When the defenders of Meizhou saw that the commander had fled, they were willing to defend the city to the death, and they also scattered and fled. There are those who flee by boat, and there are those who flee by land. Fortunately, it was also evening when Yu Dazhong fled, and it was also dark when everyone fled. The Mongolian army heard the noise and noise, and also knew that there were changes in the city of Meizhou, but the winter sky was dark and did not dare to move, which made most of the soldiers and civilians in the city flee. As soon as the day dawned, before the Mongolian army could find out the truth, Meizhou City came out and surrendered. Yelumaizhu inquired about the situation and hurriedly sent people to pursue him by land and water. It's just that there is no shadow of a ship on the water for a long time, where can I catch up? The cavalry horses were quick to gain something, shooting and killing many who escaped and capturing many people. However, most of these people were wounded soldiers or old and weak civilians, and the able-bodied ones fled into the nearby low hills.

On the second day after Yu Dazhong fled back to Jiading City, Wang Dechen and Yang Dayuan also led their troops to Jiading City. It's just that Jiading is not as good as Meizhou City, which has no danger to defend, it is definitely easy to defend and difficult to attack, and the strength of the Jiading Navy still exists, and the Mongolian Navy cannot bargain at all. Although Yu Xing was greedy, he was not ambiguous in fighting, and most of the sergeants and soldiers in the army were locals, and his heart to protect his family and hometown was extremely firm, and his morale was not affected by the fall of Longzhou and Meizhou, but he used the advantage of familiar terrain to frequently attack the grain routes of the Mongolian army, and even attacked the camp of the Mongolian army at night, burning a lot of heavy grain and grass. Therefore, after a few days of fierce fighting, the Mongolian army not only did not make the slightest progress, but lost many soldiers and ships. Wang Dechen and Yang Dayuan saw that they could not capture Jiading in the short term, so they had to dig trenches and build fortifications to prepare for a long-term siege.

A few days later, Yelumaizhu also led an army to arrive, and Liu Heima also sent ships to bring in people and craftsmen from Chengdu. The number of the three Mongol armies, plus the new annexed armies surrendered in Longzhou and Meizhou, reached 20,000, far exceeding the 7,000 defenders of Jiading. In fact, just after the Battle of Chengdu, Yu Xing trained the army again, and the number of Jiading troops reached more than 10,000. However, Yu Dazhong lost a lot of men and horses when he attacked the Pengshan Mongolian army, and this time he lost another 2,000 men and horses in Meizhou. It's just that although the Mongolian army has a large number, it is helpless in the face of the fortified city of Libao. If you want to attack a city, you have to wait for the siege weapons to be ready. Yu Xing saw that the Mongolian army was cutting wood everywhere to build siege weapons, so he naturally refused to sit idly by. He first sent men to intercept and kill the people who were transporting wood, but he was defeated by the Mongol cavalry, and then sent people to attack the artisan camp at night, but he was also blocked by trenches and earthen walls, and returned in vain. For a time, the battle in Jiading formed a stalemate.