Sun Hui saw that the gunners of the Song army lit the fire, and then they each hid to the side, crouching and covering their ears. Then the muzzle of the super cannon suddenly flashed a dark red fire, belching smoke, and then a thunderous roar.

Sun Hui in the sky could clearly see that the huge spherical cannonball came out like a meteor and flew straight towards the Yuan army's "return artillery" position.

The artillery of the Yuan army also saw the Song artillery shells falling from the sky, and they watched the shells fall into the position, and their faces were extremely frightened.

A dazzling red light flashed, and the huge spherical grenade exploded, Sun Hui saw that as the huge black smoke rose into the air, many soldiers of the multi-army were blown up, and a "return cannon" was overturned by the air wave, and the fragments of the projectile body were scattered in all directions, beating the surrounding Yuan army soldiers to the point of flesh and blood, and a huge pit appeared on the ground.

Although it was filled with black powder, it was an 800 mm caliber cannonball, and the power of the explosion could be said to be unique in this era.

"That's amazing!" Seeing this spectacular scene, Xiao Tiantian clapped her hands in the sky.

Sun Hui stared at the battle situation on the ground under his feet, he saw that the fierce bombardment of the Song army's artillery caused a great shock to the Yuan army, after the explosion, many soldiers of the army fell to the ground, let the officers beat and scold, the infantry is like this, the cavalry is similar, the deafening explosion makes the Mongolian cavalry horses stand up in fright, and often lift off the cavalry on horseback.

After a while, the Yuan army's "return artillery" was destroyed by the Song army's super artillery, the morale of the Song army in the peripheral position was greatly encouraged, and a counter-charge was launched against the Yuan army.

"What's going on?" Sun Hui turned his head to Xiao Tiantian and asked.

"It's an incendiary bomb." Xiao Tiantian winked at Sun Hui naughtily, "Sister Chu Chu came up with it, and it was filled with fierce fire oil, which was originally intended to be used to bombard the warship, but it may have been taken by the gunner." ”

Sun Hui understood, he turned his head and continued to observe the battlefield, and a quarter of an hour later, the super cannon began to shoot again, and the target of the bombardment was still the rear army of the Yuan army, but this time it was not a grenade that exploded, it was still an incendiary bomb, which proved that the gunners of the Song army did not take the wrong shell, but did it intentionally.

This incendiary bomb caused much greater damage to the Yuan army than the previous one, after it landed and exploded, it was centered on the impact point, forming a sea of fire in the Yuan army, almost hundreds of Mongolian cavalry burned their armor to the flames, and the burning war horses dragged the people covered in fire to rush around, and the ranks of the Yuan army suddenly became chaotic. After seeing the flames and billowing smoke behind him, the formation of the front army of the Yuan army, which was fighting hard with the Song army, wavered, and showed signs of retreat.

At this time, Sun Hui saw the Jiujing White Yak Daxu of the Yuan army in the distance, and he knew that it was the banner of Kublai Khan. He looked down and saw a large group of Mongol warriors, all dressed in white and white armor, all wearing helmets with forehead guards or face coverings, and he couldn't see their faces clearly, so that he couldn't tell which one was Kublai Khan, but he knew that Kublai Khan must be among them.

The unfavorable situation of the battle ahead obviously made Kublai Khan anxious, so that he somewhat ignored the danger he might face, and even ran to the front line to supervise the battle.

The Song generals on the tower of Fancheng City obviously also discovered Kublai Khan's banner, Sun Hui saw a Song army general waving a red flag, as if to send some kind of signal to the Song army gunners on the fort, and then the Song army gunners began to get busy, two strong men pulled the huge winch together, the gun carriage began to move left and right, and then two more gunners turned the roulette next to the cannon, and the muzzle of the cannon began to gradually rise, until it stopped at a 45-degree angle.

Sun Hui understood that the Song gunners were preparing to bombard Kublai Khan with super cannons, and he roughly estimated the distance in the sky and found that Kublai Khan's Daxu was just at the limit of the range of super cannons.

Probably in a hurry to launch a bombardment, the Song gunners struggled to reload their shells with unprecedented speed, and even loaded the shells in 10 minutes, and after careful aiming, the gunners ignited the cannon's medicine.

The muzzle of the super cannon once again spewed out long dark red flames and black smoke, and with a loud bang, the spherical cannonball shot out of the barrel and flew straight in the direction of Kublai Khan's Daxu.

This time the Song gunners did not use incendiary bombs, but replaced them with flowering shells, probably because of the distance, this huge spherical shell exploded in the air not far from Daxu, Sun Hui saw a dazzling red light flash, and then Kublai Khan's Daxu broke, and at the moment it fell to the ground, somehow it suddenly burned.

Many of the people around Daxu were hit by the shrapnel that flew sideways after the explosion of the flowering shell, including the Mongolian warriors in white armor, and only a few survived the explosion, but their horses were also greatly frightened, and they were not controlled by the owner on horseback, and turned around and ran towards the woods behind.

Many people in the Yuan army should have seen the fall of Kublai Khan, and the will to fight collapsed at this moment, and they began to retreat, probably because they were afraid of the tactics used by the Mongol cavalry to retreat and shoot arrows, or they were worried that the Yuan army deliberately lured them away from the position, the Song army did not leave the position to launch a pursuit, but only pursued with bows and crossbows, and the two sides finally left the battlefield after shooting at each other for a while.

After the two sides stopped fighting, perhaps because they didn't want to waste precious shells on those ordinary Yuan officers and soldiers, although the Yuan army had to withdraw from the range of the super cannon for a while, the Song army's super cannon on the city's head battery still stopped firing.

"Kublai Khan suffered a big loss today." Xiao Tiantian looked at the battlefield full of dead bodies of people and horses, and said to Sun Hui, "I just don't know if Kublai Khan killed the cannon just now." ”

"Wait for the gang under Jia Yidao to scout it." Sun Hui said, his eyes were still staring at Kublai Khan's Daxu who had burned to ashes on the ground, "I guess I may not be dead, I should be injured." ”

After the Yuan army withdrew, Sun Hui and Xiao Tiantian landed on the tower of Fancheng, and met with Du Lili and Fan Tianshun Niu Fu and other generals, inspected the defenses inside and outside the city, and learned about the casualties of the Song army.