Du Ye puts his face in his hands.
"So, there's this concept called money where - some peasants farm potatoes all year and some farm corn all year and some farm divine wisdom lotuses all year, and then nobles own the land and manage the peasants and then cultivators protect everyone from monsters. So some portion of the corn and the potatoes and the divine wisdom lotuses needs to be distributed from the peasants to the nobles and the cultivators to see that they're properly rewarded. The portion given to the nobility is called 'rent' and the portion given to the cultivators is called 'taxes'. But because the world is very complex and it would be impossible to organise the distribution of all this everywhere it needs to go. So we have money. The peasants exchange everything they make that they don't need themselves for money - coins made of bronze, silver, and jade - and then they pay their rent and taxes with the money and keep whatever money they have left for themselves. Then everyone, the peasants with what they saved, and the nobles with their rent, and the cultivators with their taxes, can go exchange the money back for everything they need when they need it, and you have to decide on if you want to spend the money you have on say, opium or wound healing tincture. With the amount of money that even low level cultivators tend to have, it's not hard to exchange for enough meat to eat. That's what I mean when I say you can afford it. This is a greatly simplified model, you understand."