It didn't take long for Ke Er Zhenxi to run out, only to see that he was leading Mo Zhai is all the way over. After Mo Zhai saw Wu Weiyi, he immediately asked him:

"Zhai heard that Brother Ke Yi just called, and only said that the eldest brother was looking for me to discuss something? …… But I don't know what it is. ”

Wu Weiyi saw that Mo Zhai had entered the tent, the corners of his mouth were slightly raised, and he said to him excitedly:

"Brother Xian, do you recognize this thing?!"

When Mo Zhai heard Wu Weiyi say this, he fixed his eyes on Wu Weiyi's hand. I saw that Wu Weiyi was holding a white and pure stone in his hand.

When Mo Zhai took over the stone again, he only felt that the stone was full of coolness. Mo Zhai shook his head and said while looking at it carefully:

"This thing...... Zhai had never seen it...... I don't know what it is. ”

Seeing that Mo Zhai didn't know what he meant, Wu Weiyi didn't tell him clearly. I just took another piece from the bamboo basket, and threw it into the fire pit without saying a word.

Just like the white hair stone just now, as soon as it entered the brazier, a burst of dark purple fireworks suddenly burst out!

"Wow?! This...... This stone ...... Can it be combusted? …… It's amazing! ”

Wu Weiyi was amazed when he heard Mo Zhai on the side, but he was not in a hurry to explain more to him, just asked him to fetch some more water.

Although Mo Zhai didn't know what Wu Weiyi's intention was in calling him to get water, he didn't dare to slack off after all. He immediately went out of the account and brought a basin of water for him with a copper bowl.

At the same time, Wu Weiyi saw that the water was coming, so he took out a white stone with a thick layer of "ground frost" attached to it from the basket. Dip into that basin of water again! Suddenly, I saw that thick layer of "white hair" was melted away by this basin of water in an instant! …… Then only the bare blue-gray stone was revealed.

Moreover, those "white hairs" not only melted into the water in an instant, but even Mo Zhai's palms, which were originally holding copper bowls, suddenly froze!

"It's cold, it's cold...... This...... These 'white hairs'! Isn't it frost and snow?! But...... But now that the climate is warm, why don't these snow and frost turn into water? …… This...... It's really weird! And what's even stranger...... It stands to reason that snow and frost are cold for water and cold for water, the so-called 'water and fire are intolerable', there is no reason for such frost and snow to fuel combustion? ! ”

At this time, Wu Weiyi heard that Mo Zhai was there and inferred by himself, although he was not able to conclude that he was ugly, but he had already touched the characteristics of this "frost...... I only heard Wu Weiyi laugh lightly, and replied to him again:

"Don't be surprised, this thing is not an ordinary 'snow frost', but a ground frost! , also known as 'nitrate'! ……”

Mo Zhai heard this name, but he was still at a loss. After all, these new things he had never seen since he was a child...... Seeing that Mo Zhai shook his head in ignorance, Wu Weiyi continued to explain to him:

"As Brother Xian just saw, this kind of nitrate soil can not only dissolve water and control ice, but also fuel fire! …… Therefore, if you use it to make a folding fire, it is the best object! ”

Mo Zhai heard the word 'save fire', and instantly understood Wu Weiyi's plan in his heart now:

"I see...... Zhai can only understand this. According to the previous meaning of the eldest brother, he originally planned to resist the fire and retreat from the enemy. However, the eldest brother is now suffering from this place, which is not as good as Picheng, but there is no fierce fire oil available...... Therefore, the eldest brother is now thinking of using these nitrate soil to make fire? ”

Wu Weiyi listened, but smiled slightly, and waved his hand with Mo Zhai and replied:

"Huh...... Brother Xian is only half right! …… As the virtuous brother said, this time is not as good as the previous time at the foot of Qingcheng Mountain, the previous time was with the help of the fierce fire oil tank, so we can lie on the mountain road on both sides, according to the distance arson! …… However, now we are all trapped here, and the slope is gentle. If we set fire to the so-called 'fiery flames', not only will we not be able to hurt the enemy, but will we also be able to set ourselves on fire? ”

When Mo Zhai heard this, he felt that the eldest brother's words were very reasonable, so he immediately replied:

"What the eldest brother said is extremely true! …… On the fire of the flames, arson here is indeed no different from burning your own house! …… That being the case, I don't know what kind of method the eldest brother came up with? ”

I saw Wu Weiyi pointing to the basket of "nitrate" again, and said in a rather treacherous way:

"Huh! …… Although the brother was interested in using fire to defend the enemy a few days ago, he was also suffering from a long time! …… However, now that there are these 'nitrates', it makes Brother Wei suddenly break down! …… And I'm waiting for this success or failure, it's all on this thing! ”

Mo Zhai heard that Wu Weiyi actually said that this thing was so magical, but he didn't know where it was "strange"? So I couldn't help asking:

"Forgive Zhai for being stupid...... This thing...... Although it can be regarded as quite peculiar, in Zhai's opinion, it is just something that ignites the fire, and it is not very novel? ”

Wu Weiyi knew that Mo Zhai was still puzzled, so he asked him rhetorically:

"Huh...... Please think about it, if the thieves come to attack, and the brother wants to send people to set fire behind the enemy, what should he do? ”

When Mo Zhai heard this, he couldn't help but be shocked:

"This! …… How can this be done? …… If we want to set fire behind enemy lines, we must lay down behind enemy lines in advance. But if you want to hide behind enemy lines, you must not carry them with open fire. However, it is also difficult to carry an open flame and only use a flint to make a fire. It must not be a forest fire in a short period of time! …… If we really do it with this method, we don't wait for the mountain fire to become a momentum, but I'm afraid that we will all be extinguished by it first! ”

Wu Weiyi heard Mo Zhai's words, and couldn't help but nod his head:

"Hmm...... What the virtuous brother said is indeed extremely reasonable! …… It's no different from what I was worried about before! …… However, now there is this 'nitrate' but it can be guaranteed, and this plan will be successful! …… As the virtuous brother said, the key to this plan is to ignite the fire! …… If you can make something out of it, you can use it anytime and anywhere...... What does the virtuous brother think? ”

When Mo Zhai heard this, he couldn't help but be taken aback again, and hurriedly asked:

"This ...... Is there such a miraculous thing in this world? …… If you get this strange thing, then the strategy just mentioned is that you can give it a try! ……”

I saw that at this time, Wu Weiyi moved the bamboo basket with a basket of nitrate and handed it to Mo Zhai, and told him:

"There is still a lot of charcoal collected outside the big tent, and the virtuous brother can send someone to cut it into pieces first, and then bake it over a yin fire until it is refined into ink! …… And the brother immediately went to find Ke Yiyi, so that he was the servant who led the way here, and here there were a lot of such stone...... At that time, the virtuous brother only needs to pour the frost in the water like Fang Cai to make nitrate. Then mix the salt water with the charcoal, let it sit overnight, wait until tomorrow and then it will be used up, and dry it over an open fire, and then fill it in the bamboo tube, and you're done! ”

Although he doesn't know anything about the principle of this thing, Mo Zhai is also a strong person after all. Even though I memorized all these production steps...... After Wu Weiyi finished explaining the method of making this thing, Mo Zhai nodded to him and said:

"Big brother, don't worry, Mo Zhai wrote it down...... In this case, if there is nothing else, Zhai will go outside to prepare! …… Wait until tomorrow to refine this thing, and then report it to the eldest brother! ”

As soon as Mo Zhai said that, he gave up his hand and resigned Wu Weiyi. He carried the basket of nitrate in both hands, and walked all the way out of the tent!

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