Pity that he is wearing thin clothes, but he is worried that charcoal can't be sold, hoping it will be colder. From Bai Juyi's "Selling Charcoal Weng" in Tang Dynasty, the full text is as follows: Selling Charcoal Weng, Nanshan chopping wood and burning charcoal. His face was covered with dust, which was the color of smoke burning, his temples were gray, and his ten fingers were burnt black. What is the money for selling charcoal for? Buy clothes, buy food in your mouth. Pity that he is wearing thin clothes, but he is worried that charcoal can't be sold, hoping it will be colder. At night, it snowed a foot thick outside the city. Early in the morning, the old man drove a charcoal wheel to the market. Cows are tired and people are hungry, but the sun has risen very high. They are resting in the mud outside the south gate of the market. Who are the two riders? Yellow messenger and white shirt. The eunuch, with documents in his hand and the emperor's orders in his mouth, shouted at the petrified palace. A load of charcoal, more than 1000 kilograms, eunuch attendants to drive away, the old man is helpless, but there is no way. Half a horse's red yarn is a silk, which is filled with charcoal to the cow's head.