Soon after Cao Zhizhou led the Yazhou army to Jiading, Niu Ling ordered an attack. The Mongol army's attack was still the same old routine, first with siege equipment onslaught and then with infantry siege. The main force of the siege was naturally the new annex army and the two armies of Meizhou and Yazhou, and the Mongol cavalry was still the warlord. The city of Jiading has a steep terrain and has never been lost to the enemy since the Mongols invaded Sichuan in 1242, which shows how easy it is to defend and difficult to attack. This time, the Mongolian army was still struggling under the city of Jiading, and all the methods such as attacking the city with ants, digging tunnels, and burning smoke were all used, except for the dead and wounded, there was no progress, but a lot of siege equipment was destroyed by the Jiading army.

In the half-month siege battle, the Mongol army only twice attacked the city gate. Once, Liu Daer was inspired by the tactics of the Thunderbolt Army, and sent a death squad to rush to the city gate with black powder on his back, and successfully placed dozens of catties of black powder. After a loud bang, although the city gate of Jiading was blown up, the Mongolian army found that the city gate had already been blocked. On the other occasion, Cao Zhizhou successfully fooled the Yibo soldiers to attack the city, and he promised to allow them to loot for three days after the city was broken, and all the looting would be his own. These barbarian soldiers who had tasted the sweetness in Hongya and Jiajiang County heard this kind of words, and even if they rushed to the city gate, they just stopped at the city gate. After the city gate was blown up, Yu San planted mines at the city gate and blew up these Yibo barbarian soldiers.

The water gate of Jiading City is the thinnest part of the city wall. In the previous siege battles, because the Mongolian army was not good at water warfare, it became the strongest place in Jiading City. Today is no longer than before, Liu Daer's betrayal gave the Mongolian army a water force sufficient to defeat the Jiading naval army. It's just that with the fire support on the city wall, the Jiading Navy still managed to resist the attack of the Meizhou Navy on the Water Gate. In the case of a stalemate in the land battle, both the offensive and defensive sides realized that the gains and losses of Jiading City were related to the success or failure of the water battle. Faced with the stalemate, Niu had no choice but to repeatedly send messengers to Chengdu to urge Liu Heima to send a naval army to reinforcements.

The general of the Mongolian army who led the naval army from Chengdu to Jiading in the south was called Shi Mo Press, he was the same Khitan as Liu Heima, and he had made miraculous achievements in the battle of Mahu River in which Niu Xuan broke the capital of Xuzhou, Zhang Shi, and was one of the few generals in the Mongolian army who was proficient in water warfare. When Shi Mo pressed only to see Pengshan City from a distance, he ordered the fleet to stop. Although Liu Heima told him that Pengshan City had been surrendered, and the scout ship reported that the Mongol flag had been raised at the head of the city, and that small boats were ready to come to guide him, he still ordered the whole army to prepare for battle. This time, he brought more than 200 large and small warships, including 1,500 naval soldiers, and lined up in a long column along the Jinjiang River, which was more than two miles long. This is Liu Heima's navy that took a year and spent a lot of resources to rebuild. If it is lost, it will be impossible for the Sichuan Ximeng army to rebuild the naval army in a short time.

The cautious Shi Moping only sent the colonel to Pengshan City, and asked Zhou Jianshen to go to his ship to discuss military affairs, and go to the front line of Jiading to meet Niu Lin together. The junior colonel also said that Peng Shan lived in a choke point, and the garrison and ships should not be moved lightly to prevent the Thunderbolt army from attacking, so Zhou Jianshen only needed to bring a few relatives to Shima in a small boat. As soon as Huang Dagen, who was sitting in the city, heard this request, he knew that this opponent was not easy to get along with. This Shi Mo press is just an old fox, he is there to discuss military affairs with Zhou Jianshen and meet with Niu Ling, obviously to let Zhou Jianshen go forward as a hostage, so that the Mongolian naval ships can pass through Pengshan City safely.

After waiting for a long time, there was a small boat carrying a few people to the Mongolian army fleet. At this time, the Mongolian fleet was still in the Jinjiang River, about three miles away from Pengshan City in the Minjiang River waterway, and Shi Mo was in the center of the Mongolian fleet, four miles away from Pengshan City. When the boat reached the front of the Mongolian ships, Shi Mopress only saw a flag embroidered with the word "Zhou" hanging on the boat, and he felt a lot more at ease. When the generals of the new annexed army surrender to Mongolia, they need to submit their names together and report their personal birthdates, places of origin, appearance and other information to the Mongolian army, and Zhou Jianshen is no exception. And in order not to make Liu Daer suspicious, the General Staff did not describe Zhou Jianshen's appearance indiscriminately, but the description was a little rough.

When Peng Shancheng's boat was still dozens of meters away from the boat, Shi Mopress only looked at the leader standing at the bow of the boat, and his appearance was consistent with the appearance of Zhou Jianshen described in the name of the petition. It's just that a Mongolian military colonel on the boat next to him suddenly ordered the boat to stop advancing. The school's loud shouting made Shi Mo press quite displeased, and when he was about to reprimand, he saw the boat speeding up. There were five people in the boat, and all but the one standing at the bow of the boat were all paddling desperately. It's just that although the shape of this small boat is a fast boat, the draft is quite deep, and the speed of progress is not fast, and it is still more than 30 meters away from the boat of Shi Moping.

When Shi Mo was only in doubt, the Mongolian army junior colonel, who had just shouted to stop the boat, cried bitterly, "blast the boat", and after speaking, he suddenly jumped into the water and swam desperately to the shore. This colonel had narrowly escaped the last Battle of Pengshan and had seen the power of the Thunderbolt Army's demolition boats to destroy the world. His cry woke up the rest of the Mongolian army, some of them scurrying around, some jumping into the water in a panic, and some of them attacking the boats. Shi Mo had only heard of the power of the Thunderbolt Army's demolition ships, and this time he had also prepared a lot of death ships to intercept the demolition ships. It's just that he still didn't calculate that the Thunderbolts would use this method to attack. There was no time to regret it, and Shi Mo turned around and turned into the cabin. In order to protect against artillery attacks, his seat was not only made of extremely thick wood, but also had a cabin with thick iron plates.

As the Thunderbolt Army's demolition boats passed between the Mongolian ships, most of the ballistas and bows fired by the Mongolian army hit their own ships, and only a few hit the target, but they also stopped the demolition boats. At this moment, the demolition ship was already scarred, a ballista had been fired in the hull, and the cabin was slowly flooded. The man standing at the bow of the ship, who had been shot by more than a dozen arrows and had escaped as a hedgehog, was now lying on the large iron ball in the cabin, pulling the fuse, and whispering to the remaining two sailors to escape. Two of the four sailors who were paddling had already been killed. When the two sailors saw that the lead had begun to smoke, they gritted their teeth and cried, "The squad leader will be brothers again in the next life", and after saying that, they turned and plunged into the water.

The few people on the Thunderbolt Army's demolition boat were not Zhou Jianshen and his escort, but soldiers from the Navy Demolition Boat Company. When Shi Mopress only proposed to let Zhou Jianshen be a hostage, Huang Dagen thought of taking this opportunity to let Shi Mopress only lift a stone to hit his own feet, and to achieve the greatest result, it was the blasting boat. It's just that this task did not let Zhou Jianshen take on it. On the one hand, he led an infantry battalion, and the soldiers were not good at water combat; On the other hand, it is also because blasting is a very professional technology, which cannot be learned in a short period of time, let alone mastered. Therefore, Huang Dagen handed over the task to the demolition boat company of the Navy Brigade.

Demolition ship companies often carry out suicidal missions, and the casualty rate is often more than 90 percent. The force is mutual, and the deeper the oppression, the deeper the hatred, and the more fierce the resistance. The brutal killing of the Mongolian army has created too many warriors who want to avenge their family and country, and they live in the world secretly, and their only belief is to take revenge on the Mongolian army and repay it with blood. Le Quanan initially only wanted to set up a blasting ship company, but there were too many applicants, so he had to set up two blasting ship companies. In this mission, due to too many competitors, the candidate was finally determined by drawing lots.