nóng / fū / qīng / lǐ / niú / péng / shí / fā / xiàn / mén / kǒu / yǒu / yì / duī / niú / shǐ农夫清理牛棚时,发现门口有一堆牛屎。While cleaning the cowshed, the farmer found a pile of cow dung by the door.