This classic is from Shi Shuo Ren Xinyu Dan.
Red dragonfly Kong Qun especially likes drinking. Wang Dao, the prime minister, advised him, "Why do you often drink? You see, the cloth that covers the wine cans in the hotel is getting moldy every day! " Kong Jun replied, "No, you didn't see the meat soaked in distiller's grains. Can it be kept longer? "