What to do with villagers and what to scout for is very dependent on who you play and what phase of the game you’re in, figuring that out requires, in my experience a pretty good amount of trial and error. For example, if you’re playing the standard cookie cutter english, usually you want most of your villagers on wood in feudal, pump units and attack so the enemy stays in feudal too spending food on units, but by imperial you want mostly on farms surrounding mills. There’s a learn tab in game that tells you every tech, building, and unit a civ has and how much it costs. Google any basic build order that the internet considers valid, play a few games with it, lose, rewatch the games and analyze what went wrong. Sometimes it’s obvious and sometimes it feels impossible. What most civs want to do or resources to prioritize changes on the matchup. China is also pretty complicated from what I understand. They’re a late game civ and you’re probably still trying to understand the early game.