"One mile away?" Zhao Zhen asked indecisively. When he retreated one mile away, he could only see a few people moving, but he could not see the specific ones.

“It must be one mile away.”

"Your Majesty, follow Zheng Lang's words," Gao Ruonai said. He is in danger and he should not let the emperor explode here today, so the Song Dynasty will be in chaos.

Zhao Zhen walked a few steps, followed the advice, and retreated a mile away. Shi Heng began to guide the soldiers to inject slowly. When several soldiers heard Zheng Lang say so cautiously, their hands holding the bottle began to tremble. Shi Heng had to say, "Be careful, be careful."

The more you said you were careful, the more your hands trembled, and when you trembled, you were always in your throat. I really wanted to slap these soldiers. Grandma, you don’t want to live, I still want to live.

Fortunately, nothing happened, and finally more than 20 liters of the solution were poured into the porcelain tank safely in a certain proportion.

Zhao Zhen asked from a distance: "Zheng Qing, don't you need to seal it?"

Black gunpowder has nothing to do with Zheng Lang. His function is only to point out the best proportion and sealing. In this regard, Zheng Lang also explained its principle, because sealing produces a large amount of air pressure, and the power is this air pressure.

But today's test cannot be sealed because Zheng Lang is still not as important as the detonator. He replied: "The seal is better, but its power is great, and some effects can be seen without sealing."

Shi Heng is already preparing the last program in the distance.

There is no detonator, if it is ignited with a fuse and lacks impulse, it can only burn this ** instead of explode. The detonator must be rayed, which Zheng Lang has not, or has not tested. So he thought of a stupid method.

This is also a exploratory process. In the past, chemistry class talked about some of the knowledge, but the teacher could not let the students be fine, make gunpowder in the school and play with fireworks and firecrackers. If that happens, there will be no more schools, and it will be blown up by the students for more than half a year.

I also know some principles. In addition to detonators, there is another method. As long as this gunpowder comes out, it is easy to make cotton gunpowder. Why do you value it? This cotton gunpowder can be used as a fire medicine for guns and cannons.

It is still very dangerous to use cotton gunpowder. So Zheng Lang asked for the next step.

Nitrgiller is very unstable. It often drops a few drops on the stone. If you hit it with a hammer, it will explode immediately. So Zheng Lang thought of a method, using a rope of plant fiber to hang a block of iron weighing more than ten pounds above the pit. Then tie the fuse to the center of the first rope, and pull the other end to the ground more than ten meters away from the **. Ignite the fuse and it will quickly burn to the joint of the two ropes. The first rope will burn, and the fuse will burn to nitroglycerin, and the iron will fall heavily from the wooden frame. The conditions for explosion will be present.

After making arrangements, Shi Heng lit the fuse and shouted: "Run."

Although it was more than ten meters away, it was still unsafe to stay here. Several people hugged their heads and ran backwards.

With this escape, the window began to open. Not many, but you could see a little light... (To be continued)
Chapter completed!