Basically, modern knowledge + fantasy/historical world = ✨ slay ✨
Manhwas where the main character gets yeeted into a new world, remembers everything from their old one (like science, history, giga-tier brainpower), and proceeds to outsmart everyone with their big brain moves.
Also, shoutout to 'The Greatest Estate Developer'. I can't add it here but you can read it on Webtoon.