Add fry to a hectare of fishponds, let them feed on the droppings of ducks that you raised, and in one year you'd got over 4000 kilograms of fish without breaking a sweat. "
一甲地的魚塭，放入魚苗，用養鴨的排泄物混養，一年輕輕鬆鬆就有七千台斤的產量。」