Transcript (en)

Chinese farmers grow vegetables on pebbles for one genius reason. After leveling the pebbles, they scatter vegetable seeds across the surface, yet the plants grow even better than those in ordinary soil without weeding or fertilizer. But the real secret lies in the fish pond beside it, as water from the pond flows beneath the pebbles, where plants absorb nutrients from fish waste. As the water passes through layers of pebbles, it is naturally filtered before flowing back into the fish pond, creating a balanced ecosystem that keeps the fish healthier and the vegetables more natural.