McGonagall looked at the white face, and the apology was very sincere, and listening to the meaning of his words, it should have been a triple protection, the dose was the same as usual, but a little bit was thrown inside...... Warcraft crystal nucleus powder?

An explosion of this magnitude could not have been caused without sufficient explosives, judging from the large crater that collapsed in the middle of the blacksmith's shop, Mo Bai did the experiment at least five meters underground.

This kind of depth can also cause this level of damage, and the power of the explosion can be imagined, and it is obviously impossible to do it with the crude explosives made by Mo Bai, so the little bit of Warcraft crystal nucleus powder he said about adding to it definitely plays a vital role.

"Even so, I hope you can avoid doing blasting tests directly at home in the future, and I am responsible for the safety of Amy and the guests." McGonagall looked at Mo Bai and nodded slightly, he could accept Mo Bai's reason, but he definitely couldn't accept that he continued to do experiments around him that even he couldn't control and predict the consequences.

"Well, after today's situation, I don't dare to do it at home, it won't be good if I scare the little boss." Mo Bai nodded a little embarrassedly, rubbed his hands and said a little excitedly: "But Boss Mai, I seem to have found a way to increase that kind of energy, adding a certain amount of Warcraft crystal nucleus powder to it, the power will be increased by hundreds or thousands of times, if the amount is enough, is it possible to pose a threat to the dragon?" ”

After getting Mo Bai's promise, McGonagall's expression changed a lot, as long as she didn't do things at home, Mo Bai didn't care about whatever she did with McGonagall.

And he is also quite interested in this method of increasing the power of explosives in a straight line, after all, this world is so dangerous, and he can't get Italian guns from the system, so he may be able to rely on himself and get some thermal weapons for self-defense.

Set up two Italian guns in front of the restaurant, and I feel inexplicably enthusiastic when I think about it.

Being able to make explosives that are more terrifying than TNT in another world where black powder does not appear, this kind of leap, McGonagall can't help but admire Mo Bai a little, could it be said that this is the legendary explosive ghost?

"If there are enough of them, and the energy can be compressed and stacked, there should be hope to kill a dragon." McGonagall nodded, pondered for a moment, and then said, "But if the target is a dragon, I recommend relying on compression to increase the density rather than simply increasing the volume, and then using something to launch it so that the explosion happens next to the dragon." ”

"What can launch them?" The inky white eyes suddenly lit up, and she looked at McGonagall with some expectation and nervousness and asked, this is exactly the problem he has been bothering and trying to solve.

"Cannon." McGonagall was sure.

"Cannon?" Mo Bai looked puzzled.

"yes, it's a cannon, something that can get that thing to the dragon." McGonagall nodded.

"Warning! Host, you're doing something dangerous! It is very likely to accelerate the process of the Nolan continent and lead to the abnormal development of this world! The system's serious voice rang out.

"System, black powder was invented in the Tang Dynasty, although it was used in wars one after another, but it has really completely replaced the bow and arrow thousands of years later, and the big hat that changed the world, you don't want to put it on my head casually, I can't afford it." McGonagall pursed her lips and continued: "And the gunpowder in this world was not invented by me, but people can directly get started with TNT, this kind of ghost, I can only sigh. ”

The system fell silent.

"Is there really such a thing, what the hell is this cannon?" Mo Bai couldn't help but take two steps forward, looking at McGonagall with a little excitement, McGonagall's words poked at his heart.

"Cannon, you can use it as a projection device, but this thing only exists in my idea now, and it's uncertain whether it can be used in practice." McGonagall smiled and shook her head.

"Boss Mai, can you tell me about it? I really need it so badly, and if I can use it, I can pay you for it. Mo Bai looked at McGonagall with burning eyes.

"I don't need money, it's just that there have always been some messy guys coming to the restaurant to make trouble recently, if the boss of Mobai can really make a baby that can kill the dragon, can you put one at the door of the restaurant at that time, and deter the little ones." McGonagall smiled and waved her hand.

"If you can really make it, of course there is no problem." Mo Baileng paused for a moment, nodded and said.

"My thinking may not be very mature, but you may be able to refer to it, and sit down in an advanced restaurant." McGonagall nodded, turning and walking towards the restaurant.

"I ...... Forget it now, I've already asked them to come over to repair the house, it's so dirty, the restaurant will start opening in a while, and I can't delay Boss Mai's business. Mo Bai glanced down at his dusty clothes and black hands, and shook his head.

"It's okay, come in, the waiter will clean it before going to work, and there are some things I have to draw for you to understand." McGonagall pushed the door in and said without looking back.

Mo Bai hesitated, but still pushed the door into the restaurant.

"Let's wash our hands and face first." McGonagall came out of the kitchen, holding a basin of water on the table.

"Thank you." Mobai looked into McGonagall's eyes, and although McGonagall had been suppressing her anger before, now he felt respect.

McGonagall took the black water, came out with a glass of water and put it lightly in front of Mo Bai, then put the pen and paper in her hand on the table, pulled out a chair and sat down, looked at Mo Bai and smiled: "Drink some water, what I said may be a bit complicated, you just listen to it, anyway, before you control the stability of the explosives, it is actually too early to make artillery." ”

"Dynamite?" Mo Bai sat down, took a sip of water, and looked at McGonagall with some puzzlement.

McGonagall immediately came back to her senses and said with a smile that there was no such thing as explosives, and asked with a smile, "Why are you going to call that exploding thing you made today?" ”

"In that case, it seems like it's a good idea to call it explosives." Mo Bai thought about it seriously and nodded.

"Okay, then let's call it explosives for the time being, and the so-called artillery is the use of gunpowder to burn in a confined space to generate a huge thrust, and then push the compressed explosives to get kinetic energy, so as to eject the barrel, and finally explode." McGetty brushed the paper a few times, pointed to a cannon barrel sandwiched between the two circles, and said seriously: "You see, this is probably what it looks like." ”