The outside toilets of houses in olden days were generally placed by the vegetable plot in front of or behind the house, and used as a source of manure, on the principle that "you don't waste your fertilizer on other folks 'fields."
原來，古早民居的茅廁，通常設在屋前屋後的菜圃邊，「肥水不落外人田」，當作堆肥用。