Kuo Li-cheng indicates that in novels like The Golden Lotus, you can often see in old style banquets that when the chef serves the main course the guest of honor must give the cook a "gratuity," using silver wrapped in red paper, to express appreciation to the host.
郭立誠表示，在金瓶梅之類的章回小說，常可看到老式宴會中，廚師獻上主菜，主客均給廚子「放賞」的描述。那是用紅紙包上銀子，以示給對方的犒謝。