The Hongyi cannon is a smoothbore gun with a breech charge, which is destined to require cumbersome loading steps, and has a very low firing frequency after the first launch, but it is superior in the long range and huge power, that is, the Europeans invented it in the early days and relied on quantity to win. When the powerful Portugal was fighting and invading everywhere, there were as many as 40 Hongyi cannons on a single battleship, and there were very few opponents who could withstand the power of a salvo.

The Franc cannon, which had a greater impact on firearms in later generations, is commonly known as a rapid-fire cannon because it can fire continuously, and it is an iron breech-loading smoothbore cannon, and the whole cannon is composed of three parts: the barrel, the belly, and the sub-cannon. According to the delicate coordination of the structure and the difficulty of the operation, Zhao Tianyou listed them as the next target to be overcome.

Because of the priority considerations, at present, it is a passive defense of the city, giving priority to the development and manufacture of Hongyi cannons that are inconvenient to move, forming a weapon with great deterrent power at the head of the city, bombing the siege equipment of the Yuan soldiers, and forming a huge threat to the personnel and horses of the Yuan army.

Once the war advantage is huge, and it is necessary to pursue the Yuan soldiers out of the city to fight a field battle, it is convenient to move and launch the rapid-fire cannon of the small Franc machine, which can form a huge threat to the cavalry. In the Yuan and Song Wars, which lasted more than 40 years, the Yuan Dynasty relied on a small number of cavalry troops to defeat the Song Dynasty with millions of troops and tens of millions of people. In addition to the fact that the Song army has always been passively beaten and defended, the key is that the Song army won the battle, and only won strategically, and could not eliminate the living force of the Yuan Dynasty soldiers on a large scale, and once defeated, the entire city would completely fall.

And this battle of Guangzhou City made Li Heng a little cautious and cautious, before the official start of the war, he had already lost 4,000 elite cavalry, which was something he had not done in the war of aggression against the Song Dynasty for more than ten years. Li Heng led the army in the past, there were times when he was ambushed and defeated, but the loss of a few hundred people was too much, and he had formed an inherent impression of the combat effectiveness of the Song army, and he never felt that it was a difficult thing to defeat the Song army.

After discussing with Lu Shikui, the strategy of encircling but not fighting was set, leaving two gates for the soldiers and civilians in the city to enter and exit freely, and then building siege equipment on a large scale outside the west gate of the north city. But it is artificially slowing down, making it there slowly, the stalls are quite large, and there are few finished products, so that the people guarding the city worry about it every day is the biggest deterrent.

It's not that he doesn't want to attack Guangzhou, but he feels that there is no need to fight to attack the city now, Zhang Shijie and Lu Xiufu fled at sea with Song Duanzong, and escaped a little bit after fighting with Zhu Qing's warship. has left the sea area of Fujian and entered the boundary of Chaozhou in Guangdong, and the Yuan soldiers on land did not follow up, only Zhang Hongfan's army passed through Guangdong from Jiangxi and prepared to attack Meizhou.

Zhu Qing had just obtained 600 new ships from Pu Shougeng, and his troops were being adjusted on a large scale, so he was in close pursuit of Zhang Shijie's troops, but he kept his distance and did not fight a large-scale battle. The fleet that had been biting Zhang Shijie arrived in Chaozhou, when Chaozhou was still under the command of the Song army, and made a strong supplement to the Song army fleet gathered on the sea.

Originally, Song Duanzong could go ashore and enter Chaozhou, and the army could also be assembled in Meizhou to fight against Zhang Hongfan, who was attacking by land, and he could echo Zhang Zhensun in Guangzhou when he went south.

At this time of undecided, Chen Yizhong, the prime minister who had disappeared for a long time, returned from Vietnam, and he changed his mind without organizing reinforcements, hoping to lead Song Duanzong to Leizhou Dingdu, with Qiongzhou Island behind him, he would definitely be able to reorganize the rivers and mountains.

Zhang Shijie had also considered this idea, thinking that it was feasible, and he could even go directly to the capital of Qiongzhou, but when Chen Yizhong said it, the effect and taste were different. So after arguing at sea for three days, it was decided not to go ashore again, and directly set sail to anchor and settle in Leizhou.

At this time, the fleet encountered a typhoon, the Song army's warships were damaged innumerable, and thousands of soldiers and civilians fell into the water. Although the development of the situation was slightly deviated, Song Duanzong still did not escape the fate of illness and death, did not leave him a chance to land on Jiezhou Island, and did not be buried in Lantau Island after his death.

Duanzong's illness and death belonged to a state funeral, and a big funeral should be held and announced to the world, but several ministers knew that no one would care about how the funeral was done. At this time, the most important thing is to be stable, and the imperial court must introduce a new emperor as soon as possible to support it, otherwise the turbulent Song court will be finished immediately.

At this time, the fleet had come to the island near Zhanjiang because of the typhoon, so the five-year-old Zhao Yu ascended the throne and became the emperor and changed the country name to Xiangxing. This happened half a year earlier, which should be due to the chain reaction caused by Pu Shougeng's early surrender to the Yuan Dynasty, and Zhao Tianyou did not play a role in it, and it cannot be argued.

Time has been delayed to the winter of the first year of Xiangxing, the besieging of Guangzhou City has not moved, the construction of siege vehicles has been hundreds, large and small catapults into a line. The cavalry of the Yuan Dynasty outside the city went out every day to walk their horses and graze, collect the surrounding molded wood, cut it down and transport it to the outside of Guangzhou to build siege equipment such as building cars and catapults.

There are already eight Hongyi cannons in the city, and there are eight on each city, all of which are very strong and mobile artillery carriages, and Zhou Yuan has tested the power of the launch on their island, Rao knows that there will be no accidents, but every time the people who fire and launch are trembling. Because the sound was too loud and the vibration was violent, the barrel was seriously displaced after firing, and if there was no solid gun carriage to fix it, I really don't know if this huge gun body would fly up and hit anyone.

Lao Feng Tou wanted to continue to cast Hongyi cannons, but was called to pause by Zhao Tianyou, consuming too much refined iron and other materials, although Zhang Zhensun also took out the silver of Guangzhou City to support some, but Zhao Tianyou still hesitated to cast cannons. Qian Dao is not the first, but he wants to test whether the process copied from memory can meet the requirements of actual combat, and if there are deficiencies, where to improve.

In his opinion, the eight cannons at the head of the city are sufficient, not to mention that the frequency of his firing is too slow will affect the effect, and his deterrent power should be far greater than the actual lethality. Although the interval between firing is too long, it will give the besieging soldiers too much space to get close to the city walls, after all, the main defense weapons still rely on the cheaper thunderbolt cannons, as well as the thunderbolts and bows that can be thrown to kill the enemy.

In fact, before there was no large-scale burst weapons, the fight to the end must be face to face, real swords and real guns. No matter how many siege and defensive weapons there are, they can't stop 70,000 or 80,000 people, rush to the bottom of the city and set up a ladder to climb, and when they rush up the city wall, the most effective thing is the knife and gun in your hand.