In fact, Wang Feng's method of making nitric acid is not economical, but also wasteful, the mainstream method of modern society is to mix ammonia and air in a ratio of two to one, pass it into the hot platinum alloy network, and generate nitrogen dioxide, which can be made directly into the water, but it is still the old saying, Wang Feng has no conditions now.

It's just that it can't be evaluated purely by cost when it is used only for military purposes, and how can the impact of a big victory be measured in terms of money? With 120,000 satisfaction, Wang Feng said: "The bottle is nitric acid, and the sulfuric acid was made before, the difference between the two, I will explain it separately in the book "Chemistry" in the future, now two people come over, pour nitric acid into a clean bottle, cover it with a black cloth, be careful!" ”

"Yes!" The two soldiers operated according to the instructions, and Wang Feng was about to synthesize thunder~~ mercury acid, but his heart moved, and he said: "Bring some cotton wool, I will open your eyes today." ”

"Yes!" A soldier rushed away, taking advantage of this time, Wang Feng took some concentrated sulfuric acid and nitric acid in proportion to bottle and mix, when the cotton wool was brought, he ran to a shade, tore off a handful and soaked it in the mixture, the whole process, the movement was gentle, full of dignified.

Just kidding, but this is nitrocellulose, it is one of the high explosives, if you are not careful, not to mention the end of your life, it is indispensable to blow up and disfigure your face.

Seeing that Wang Feng was so nervous, Hong Xuanjiao couldn't help but ask, "Wang Feng, what the hell are you doing?" ”

"Sister Xuanjiao, the answer will be revealed later, come, stand far away!" Wang Feng waved his hand impatiently.

"Humph!" Hong Xuanjiao snorted, secretly angry, but couldn't resist curiosity, and retreated far away with everyone, Wang Feng put the nitrocellulose on the ground, and after letting the mixture be taken away, he took a few steps back, picked up a dry stone from under the sun, aimed at it slightly, threw it out of his hand, and at the same time slammed backwards!

"Boom!" The moment the stone hit the cotton wool, it caused a violent explosion, and everyone was shocked!

"How did this cotton wool explode?" Lu Dayou asked dumbfounded.

Wang Feng smiled slightly: "The principle inside is not clear to you for a while, but after the cotton wool is immersed in the mixture of nitric acid and sulfuric acid, it is no longer the original cotton wool, but denatured into nitrocellulose, how does its power compare with gunpowder?" ”

Hong Xuanjiao happily took it and said: "Wang Feng, such a small ball of cotton nitrocellulose can cause such a strong explosion, much stronger than gunpowder, if it is applied to guns, then it will not be in the future."

Hong Xuanjiao didn't dare to think about it, her eyes were full of stars, and the eyes of others were also burning, and the eyes that looked at Wang Feng were a little different.

In fact, Wang Feng enjoyed this kind of eyes that were close to admiration, but he had to pour a basin of cold water on his head: "Sister Xuanjiao, what you think is too simple, a stone can detonate it, and when it is moved to the sun, it will spontaneously combust, storage, transportation, and even firing is a big problem, if you are not careful, you will blow yourself up first without blowing up the enemy." ”

When everyone thought about it, they all looked anxious, as if they had a treasure in their hands and couldn't take it, and their hearts were anxious and itchy.

Wang Feng said again: "I will find a way to solve the problem of nitrocellulose, in fact, nitric acid is a good thing, it is the main raw material for making explosives, nitric acid is in hand, the world is up to me!" Sister Xuanjiao, you must collect as many materials as possible. ”

This was very unpleasant to hear, Hong Xuanjiao reminded: "Wang Feng, who are you talking to, is it possible that you treat me as your subordinate?" ”

"Huh? How can it be? You are my beloved sister Xuanjiao! Wang Feng smiled and touched his forehead, for more than a month, the hair in the front half of his head grew half an inch, but behind it was a long hair shawl, strange and ugly, he often wanted to cut off his hair, simply cut his head, the standard soldier brother's head, convenient and neat, but no one in the Taiping Army cut his hair, he was not sure of the consequences of doing this, so he had to be ugly with him.

"Flutter~~" Hong Xuanjiao also noticed Wang Feng's ugly hairstyle, chuckled, pursed her lips and asked: "Wang Feng, the explosive bag you got last time played an important role in our army's attack on Zhenjiang and Yangzhou, and this time you made nitrocellulose, many unused materials over there should have other uses, where did you get these things?" Don't fool me with Western missionaries, ghosts and ghosts, except for missionary money, it is impossible to teach us Chinese any skills. ”

Wang Feng said as a matter of course: "The King of Heaven dreamed of God, I dreamed of Taishang Laojun, Taishang Laojun is famous for alchemy, dynamite is just a by-product of alchemy, and everything I know is passed down by Taishang Laojun himself!" ”

No one believed this, and Hong Xuanjiao even lost a disdainful look, but she knew that Wang Feng was unwilling to say that she didn't ask any questions, so she could only hide this incomprehension in her heart.

Wang Feng looked at the sky, and was about to get the thunder~~ mercury out in one go, but Li Erhu and a female soldier appeared in sight, Li Erhu called from afar: "Master Shuai, the East King summoned you to the East Hall to discuss matters." ”

The female soldier also waved her hand and said, "Chief, it turns out that you are here, and the East King invites you to go to the East Palace." ”

"Huh?" Wang Feng and Hong Xuanjiao glanced at each other, and they both felt that something was about to happen.

Wang Feng hurriedly said: "Sister Xuanjiao, you go first, I'll tidy it up, and I'll come back in fifteen minutes." ”

"Hmm!" Although Hong Xuanjiao was very reluctant to leave, she could only nod and leave quickly with her entourage.

Fifteen minutes, not enough to synthesize thunder ~~ mercury acid, so Wang Feng ordered people to classify and preserve the materials and finished products, and seeing that the time was almost up, he also rode his horse to the East Palace.

This is already Yang Xiuqing's third mansion, the first is located in Zhan Yuan, lived for three days and then moved to the Ming Imperial Palace Qing Jiangning General Office, its building is luxurious, the scenery is pleasant, Kangxi Southern Tour has taken this as a palace, Yang Xiuqing was originally very satisfied, but because it was within the range of the artillery of the Jiangnan camp, he had no choice but to move to the former Shandong Salt Transport Envoy near the Hanxi Gate.

Although Wang Feng had a residence in the East Palace, he usually stayed in the barracks, and this was the first time he had come to the new East Palace.

In addition to the original courtyard of the East Palace, there is a huge construction site within a radius of five or six miles nearby, the houses have been demolished, the prototype of individual palaces has appeared, the wall is almost complete, three feet wide, two zhang high, bright yellow color, broken magnets are all over the top of the wall.

The gatehouse is just completed, about five or six door width, there is another five-storey watchtower outside the door, four pillars are densely nailed iron thistle, there are two Hongyi cannons on the left and right, and the head door is pasted with a couplet: the princes of the eastern kingdom, for the heavens, Wang Ji thousands of miles, and the land is boundless!

Wang Feng looked at this magnificent East Palace, sighed secretly, and then turned his eyes to the direction of the Heavenly King's Palace and the North Palace, where there are also two huge construction sites, in fact, not only that, due to the exemplary role of Hong Xiuquan, Yang Xiuqing and Wei Changhui, the military leaders with a little strength in the Taiping Army are all expanding vigorously, and now Nanjing City, the whole city has become a construction site!

(Thank you Liu Tian 001 for your tip~~~~)