Travel Back to Ancient Times

The protagonist Su Chuan inexplicably traveled to ancient times, thinking he could sweep away the world. "What is the formula of gunpowder? How are the parts of firearms made? How do you get iron???" There are also some "special reasons" "Oh my God! Why is my physical condition so poor? Wait! Why are there so few people in my tribe???" And... "Oh my god! The wizard is about to have orgasm!" So... "Train harder for me! All the supplies of the entire tribe are on you! Why don't you work hard?!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.