"Your Majesty, I cannot explain this to you. It would be best if you could go and see it yourself."

Wang Maoduan wiped his blackened bald head and said dejectedly.

"Maybe it's the bad luck I brought from wearing a wig to pretend to be a Taoist priest some time ago, and my lack of sincerity. Otherwise, how could something like this happen?"

Wang Maoduan thought to himself and made up his mind to follow Lin Hai's order and keep his head bald all year round.

There are three bronze cannons placed in the parade ground.

Since Lin Hai had given Wang Maoduan relatively detailed drawings, the bronze cannon made by Wang Maoduan was quite decent.

"Your Majesty, following your instructions and with an ample supply of copper ore, we have crafted three copper cannons of varying sizes. The firing method is the same as you described, using a modified formula of explosives as the propellant. The force of the explosion propels the projectile, which then strikes the target."

Wang Maoduan said respectfully, "We've verified your idea and found that the barrel of the copper cannon needs to be quite thick, otherwise the explosion will directly rupture the barrel. Now the thickness of the barrel matches our charge, which is just right."

"Well, it seems to be correct."

Lin Hai looked at the gun barrel carefully. It was cast very well. There were no bubbles in the barrel and the inner wall was very smooth. There was not even any sign of it having been fired.

"You haven't test-fired it?"

Lin Hai was a little angry. "I'm an emperor after all. Why did you ask me to come here when you haven't even tried firing before? To see your first charity? Please, I don't want to see every first time, okay?"

"Your Majesty, we have conducted a test firing."

Wang Maoduan replied with his head lowered.

Lin Hai looked at Wang Maoduan in surprise, then went back to look at the inner wall of the barrel, and his expression instantly became serious.

"One more time, let me see."

Wang Maoduan received the order and quickly directed people to start loading.

The entire loading process was pretty much the same as Lin Hai had imagined. Wang Maoduan even used fixed-load propellant bags for the propellant, and it seemed like there was no problem at all.

Afterwards, before Wang Maoduan could say anything, Lin Hai took the initiative to retreat several dozen meters away. Although the people who followed him didn't understand why, seeing Lin Hai like this, they knew that retreating was necessary.

When everyone stood still in the distance, Lin Hai looked around, grabbed Cheng Guorong and put him in front of him. Cheng Guorong was originally tall, and now he could just completely cover Lin Hai.

Lin Hai poked half of his head out from the side of Cheng Guorong and shouted, "It's time to light the fire."

Wang Maoduan understood and picked up a thin bamboo stick that was more than ten meters long from the ground. He passed it through several supports and successfully sent the fire into the fire door.

There was no expected loud explosion.

Lin Hai and everyone else were stunned.

"Principal, is this the cannon you mentioned?"

Cheng Guorong was so shocked that he even forgot to change his address.

"No, I didn't."

Lin Hai's heart was filled with huge waves. Damn it, again?

Yes, after the propellant was ignited, accompanied by a muffled sound, what came into everyone's eyes was a lingering mosaic covering the entire cannon.