This article describes the hardships of an old man who lives by burning charcoal. Through the experience of selling charcoal Weng, the corrupt essence of "palace market" was deeply exposed, and the crime of plundering people by rulers was given a powerful whip, which satirized the corrupt social reality at that time and expressed the author's deep sympathy for the working people at the lower level, which was of strong social typical significance. The whole poem is vivid, vivid and vivid, with an abrupt ending, implicit and powerful, and unique in the choice of things details and the portrayal of characters' psychology.