The Salted Fish Empire

Lin Bei, a good-for-nothing shut-in, accidentally transmigrates to a fantasy world. After the System binds to him, he discovers that he has no talent for cultivation whatsoever. Just as he decides to lie flat and live like a lazy fish, he realizes that this world's technology is still stuck at the level of "heating water with spirit stones to take a bath." And so begins his absurd life of using middle school physics and chemistry to save the people, and becoming an emperor along the way.

"You call this magic? Isn't it just electrolysis?"

"This formation is actually based on binary."

"What kind of immortal elixir? Isn't it just penicillin?"