The Chinese don’t waste anything. On back roads, I saw villages with their community latrines up on risers, to facilitate collection of shit as an agricultural fertilizer. Assuming a pound a week per capita , a billion Chinese would produce 25-million tons of annual outpoop.,
In a rural roadhouse restaurant, there was a trough under a wall accessible to both sides. People squat-shit on one side, and hogs could be heard noshing on the other. Best Canadian bacon I’ve ever tasted.