It has been almost a month since Cheng She came out on this trip, and the five reconnaissance teams he led are responsible for reconnoitring the southern area of Chengdu, and the current task has basically ended. For the past two days he has been lurking at the agreed meeting point, waiting for the confluence of the various reconnaissance teams. When Su San'er's scout team was attacked by the Mongols, he was resting in the reeds on the side of the road with the three reconnaissance team soldiers who had returned to the team. But the faint sound of horses' hooves in the distance alerted them, and after a while a fire broke out in the distant woods, and then a group of Mongol cavalry rode towards this side.

During this period of reconnaissance, the Perak Army reconnaissance team was extremely cautious, trying to avoid major roads and take remote paths, and also tried not to clash with the Mongolian army, officers and even bandits. Because the Mongol army in Chengdu had been suppressed by the Song army, and there were very few reconnaissance cavalry, the reconnaissance teams under Cheng She did not clash with the Mongols, and the ammunition in their hands was basically not consumed. When he discovered that the Mongolian cavalry was coming in the direction where he was hiding, Cheng He decided to raid this Mongolian ten-man squad. Now that the troops are three to one, it is an ambush, and Cheng She has full confidence to annihilate the Mongols.

Not surprisingly, after a grenade and a volley of guns, the Mongol soldiers were either killed or wounded, and fell under their horses. The biggest gain of this battle was the capture of eight horses, in the past, the small battles between the Thunderbolt army and the Mongolian army were often routs, and the horses were also captured, but they were all wounded horses and could not be used anymore, so they all turned into horse meat in the end. The Mongol cavalry team that was completely annihilated this time was also standard, with ten men and twenty horses, except for five killed and seven horses who could not walk due to injuries, the remaining eight became trophies of the Thunderbolt army. Cheng She was overjoyed by this unexpected gain, and after leaving his personnel to pick up the two reconnaissance teams that had not yet returned, he returned to Hengyuan Town with horses and other booty.

When all the fifteen reconnaissance teams in the direction of Chengdu-Genting City returned to Hengyuan Town, it had been a month since they set out. These 15 reconnaissance teams were originally a full 150 people, but only 141 returned, of whom one died of illness and eight died in battle. Three of the war dead were killed by bandits and Mongol attacks, while the other five were killed by Yao Sai'an's men in Genting City. In a canyon ten miles away from Genting City, Yao Shi'an's soldiers suddenly killed the Thunderbolt soldiers dressed as Taoist priests. Even though the Perak soldiers reported their identities as the Chongqing Mansion Army at the last moment, the Genting City soldiers still did not stop, and had no choice but to resist. However, the soldiers of Genting City were outnumbered, and although the soldiers of the Thunderbolt Army used grenades and muskets to inflict heavy casualties on the other side, they themselves were also damaged by the fire of the strong crossbows. Fortunately, the two seriously wounded were left behind and pulled grenades in the chasing group, and this kind of bravery that frightened the Genting City soldiers no longer dared to chase, so that the reconnaissance team was able to escape, but everyone was injured.

Fortunately, despite the loss of personnel, no muskets and grenades were captured by the enemy. The Song army listed weapons such as the Divine Arm Crossbow, the Heaven-Shaking Thunder, and the Assault Rifle as top-secret armaments, which were strictly used and kept in peacetime, and could not fall into the hands of the enemy even if they were destroyed during battle. The Perak Army has a very good management of firearms, and even each firearm is numbered and managed in a ledger. Of course, Ouyang Xuan also knew that technology diffusion was inevitable, but it was necessary to delay the speed of technology diffusion as much as possible, so that the military technology of the Thunderbolt Army would form a generation gap with the hostile forces. You must know that the science and technology of the Southern Song Dynasty is the pinnacle of ancient China, and there are also many talents in the areas controlled by the government, as long as there are samples, it is not too difficult to learn and imitate the firearms of the Thunderbolt army. What worries Ouyang Xuan even more is that these talents are just used by the government, and they are afraid of surrendering to the Mongols. You must know that the Mongols are also very good at learning and treating talents, which can be seen from the fact that they do not kill craftsmen and Confucian scholars in every slaughter.

According to the information gathered later, the indiscriminate attacks on Genting City were related to its extreme xenophobia, and although they were also at war with the Mongols, they also regarded looting as commonplace, even looting the food and grass of friendly troops. Since Yao Shi'an took over, Genting City has become his private domain, and Yu Yu has tried to enter Genting City many times when he was in charge of Sichuan. After Yu Jue, Yao Shi'an listened to the court and did not listen to the announcement, and there were faint signs of secession. The Pu family is a big family in Shuzhong, although Pu Zhizhi is a civil official, he has a strong personality, Yao Shi'an does not dare not give face, but it is only a false and wrongful snake.

Yunding City has 8,000 soldiers, is the largest number of troops in Sichuan except Chongqing Prefecture, the battle of Chengdu Pu Zezhi asked to send 7,000 men, but Yao Shi'an only sent 4,000 soldiers, the reason is that in addition to Yunding City to guard against the Mongol raid, is the lack of food. Yao Shi'an's two reasons are really far-fetched, to say that although this Genting City is one of the "Eight Pillars of Sichuan", the geographical location is also extremely important, and it is also the station of Chengdu Prefecture, but at present, all the troops of Sichuan Ximeng are cowering in Chengdu City, which is two hundred miles away, and they are obviously not capable of attacking this precipitous fortress. Pu Zezhi's attack on Chengdu was inevitable, and he carried even more materials on this trip, basically bringing all the accumulation of more than ten years in Shu after Yu Jue. His principle is to send as many troops as he wants, and if Genting City sends less troops, he will give less food, but Yao Shi'an is still reluctant to send more troops and horses, for fear that the loss of men and horses will affect his strength. In his heart, having soldiers is the king in these years, and as for the shortage of food, as long as he boils for two more months, it will be the time when the wheat in the Chengdu Plain is ripe, and there will be no shortage of food.

The information brought back by the reconnaissance in the direction of Chengdu dispelled Ouyang Xuan's concerns—the original historical trend had not changed. In the process of attacking Chengdu City, although the Song army entered the city and engaged in fierce street battles with the Mongol army, and even occupied half of the city and killed the commander of the Mongol army, Atahu, but the Mongol army was extremely tenacious and did not retreat, and the Song army had no choice but to withdraw from the city. With the continuous withdrawal of Mongolian garrisons from all over western Sichuan to Chengdu, the Mongol defenders have been able to hold on to the city.

As time passed, the situation became more and more unfavorable for the besieging Song army. What's even worse is that Niu Ling, who was attacking in eastern Sichuan, had already led a strong army back to help, and it was reported that he had defeated Liu Quan's troops and Duan Yuanjian's troops of Lingquan Mountain in Jiantandu, Suining Prefecture, and had rushed towards Chengdu. As soon as Jiantandu and Lingquan Mountain are lost, the Chengdu Plain will be in no danger to defend, and Pu Zezhi's troops will face the danger of being attacked on their backs. The Mongol garrison in Lizhou, where Wang Dechen was stationed in northern Sichuan, also sent reinforcements to Chengdu. The current battle of Chengdu was very fierce because Pu Zezhi wanted to take Chengdu before the arrival of Mongolian reinforcements. Ouyang Xuan and other high-ranking Thunderbolt Army members all knew that the current Song army was besieging less than 5,000 Mongolian troops with 40,000 soldiers and horses.