Late Ming Dynasty: Zhu Cihong, Where Did You Come From?

Zhu Cixiang was tinkering with the things in his hands, muttering: "One nitrate, two sulfur, and three charcoal. It's hard for a god to escape. Just blow it up for me." "Pfft" a burst of black smoke rose, and Zhu Cixiang's fair little face was stained with jet black. "Hey! Failed again. It's a pity that I'm an engineering dog, but I can't even tinker with the most common black powder." This is the end of the Ming Dynasty, but it is not the end of the Ming Dynasty that you are familiar with. An engineering student who traveled through time and became Zhu Cixi, with the emperor system, thought that he would use his knowledge to kill everyone, but he found that the things he had studied were of no use at all, such as hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, etc. Oxygen, fluorine, neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, argon, potassium, calcium... It can't be said that it doesn't work at all, but it has become somewhat different, until he went to the palace to browse and found out: his former carpenter emperor uncle died in a rebellion, and the national master Pudu Cihang... Oh, shit! Where did you come from? Since mathematics, physics and chemistry are not easy to use, let's rely on the system. Unexpectedly, the system is even more confusing...