The "10,000 enemies" carried by the trolley weighing up and down 100 catties were just for blasting and pushing the wall. In order not to be too big for safety, the shell is basically a sintered clay, a very simple primitive society level thick clay pot, just able to ensure that sixty or seventy pounds of "back clay pot" will not be easily broken. Each one contained thirty or forty pounds of black powder, about twenty kilograms.

Because I was very worried that when multiple "10,000 enemies" detonated together, one of them exploded first and blew the others away. The simple accumulation of gunpowder is too good to push the wall, so in the end it can only be blasted in batches of roughly similar areas.

The violent explosion sounded with some momentum, and the smoke and dust about two feet high accompanied by the clods of earth scattered in all directions were the teenagers who were a hundred meters away and felt a lot of shock when they experienced the black powder explosion scene for the first time.

At a distance of about 100 steps and 150 meters, the young volunteers of the demolition team marched rhythmically under the command of the ladder-shaped diagonal line, but when the explosion sounded, the huge deterrence also made many teenagers dozens of meters away fall to the ground on the spot, even if they blocked their ears with damp cotton. Some of the young non-commissioned officers in charge of cover were a little sober, thinking of the possible pressure of supervising the battle, and had to push the trolley back into the smoke.

When the smoke was not so thick, the opponent near the palace wall was also intimidated, and the second round of blasting attacks began. Another huge explosion was accompanied by clods of earth that flew into the sky and in all directions. In just a minute or so, such a blasting attack was carried out three rounds in a row.

During the fourth round of blasting, many defenders within the palace walls had already reacted, and although they did not dare to approach the key direction of the blasting attack, they deployed their bows and arrows from other directions under Wei Zhongxian's arrangement to suppress the young recruits in the blasting attack. In addition, the smoke brought by the blasting accumulated a lot, and it was difficult to identify the attack point for a while. The blast attack battle had to stop. Under Xiao Xuan's command, the elite cavalry of the Imperial Horse Supervisor also tried their best to spread out on both flanks once again and fired sideways to suppress them.

The rain of arrows replaced firearms as the main means of fighting between the two sides, and more and more people in the attacking team began to be hit by arrows. It was only when the teenagers saw that even if they were hit by an arrow, it did not mean that they were injured, and only some throws such as bricks and stones that were easier to dodge should be careful, that the huge pressure of the first battle was slightly relieved.

Xiao Xuan found that at this time, he still effectively overestimated his own team, which had only been in the army for ten days and had just experienced the battle. Even if most of the arrows in the face are weak and weak, and sporadic firearms will not cause serious injuries even if they hit the limbs of the teenagers, but these soldiers, who are not in a place where the people are strong, still do not have the ability to "attack with arrows and rocks" after selection.

After mobilizing the last wave of volunteers to launch the fifth round of blasting attacks after the smoke cleared, many teenagers were discouraged when they saw that the thick palace wall could not be blown up even by five "100,000 catties of enemies", and there were not many people willing to take the initiative to fight.

Xiao Xuan was also a little disappointed at this time: according to his previous calculations, even if the performance of black powder at the level of the late Ming Dynasty was one-fifth of that of black powder at the end of the 19th century according to the analysis of the amount and power of the fire, and the strength of this palace wall was more than five times that of the ordinary standard modern brick wall, even if it did not collapse under so many rounds of blasting, there should be some signs, right? However, apart from the blackened and many clods of earth that seemed to be embedded in the wall, there was no sign of collapse on the palace wall in the direction of the key blasting.

At the same time, at least two dozen people were hit by arrows or stones, and five were wounded in the legs and feet, one of which appeared to be in danger of breaking a bone, despite the armor. The one-percent loss rate also brought a lot of shake to hundreds of teenagers.

Xiao Xuan believed that if a strict battle team was launched at this time, the entire team would definitely be able to continue to fight, or continue to carry out combat missions under duress. However, after thinking about it, he still felt that it was not appropriate to do this in the first battle at a critical moment of last resort, so he ordered the gunners to use the "Great General Cannon" that had not been used before to open fire under the cover of the shield soldiers.

At this time, the artillery of the Ming Dynasty was light and iron-clad, but the relatively large guns were still mostly copper cannons. For example, during the Battle of the Hunhe River, the artillery captured by the Manchu army in Shenyang to break the formation was not the legendary Hongyi cannon at all, but it was also common in the Ming army, and it was equipped with hundreds of Philippine bronze cannons in the Battle of Songshan, and the body was only three or four hundred pounds.

This kind of artillery was regarded as a "light artillery" in the European military system during the war era, but due to the backwardness of domestic politics and transportation at this time, the artillery with a barrel of more than 200 kilograms can still be regarded as a "heavy artillery".

When this bronze cannon was fired violently with the highest standard charge under Xiao Xuan's order, the gun carriage of more than 400 catties was suddenly pushed backwards several meters away. The projectile, estimated at 200 meters per second with an initial velocity of 70,000 joules and 80,000 joules of energy, slammed into the wall of the blasting attack no more than 50 paces away. A lot of bricks and stones were finally shattered, but the heavy palace walls still looked unbreakable, which was still beyond Xiao Xuan's expectations.

But at this time, there was not much to take care of, in order to spread the risk and reduce the psychological pressure, Xiao Xuan asked about 100 teenagers who had focused on practicing artillery firearms in the past ten days to take turns to go into battle and fire in the rain of arrows, and launched five firing shots in four minutes.

Xiao Xuan, who felt that his morale was beginning to show a bad sign, Xiao Xuan was also glad that he was not completely unprepared, and once again took the risk of ordering the gunners to fire live ammunition from the second general gun to start shooting. I have also consulted some of the more experienced veteran gunners in this area, the barrel of the cannon is fired from a temperature that is not too hot, and the risk of a full-charge explosion will be relatively high per 100 guns when firing solid shells, but if the standard is low and the soft paper is lit before stopping, you can still barely shoot three rounds of live ammunition.

In this way, when all the safety life firepower was concentrated in the two gaps of the previous rounds of blasting and shelling, and after fifty or sixty rounds of live ammunition bombardment one after another, the palace wall that seemed to be thick could no longer withstand the firearm attacks with continuous explosions, and it seemed that the internal structure had already been destroyed and completely collapsed.