steamed cake. Liu Xi's "interpretation of the name" of the Eastern Han Dynasty explains the cake: "Cake, and also, ulcer wheat to make the merger also." Cake is the meaning of merging, the food formed by mixing water and flour together was first called cake. According to the different practices, the call is also different: "Therefore, the fire and eaters, called for burnt cake; water boil and eaters, called for soup cake; steamer and eaters, called for steamed cake." And the Song Dynasty lyricist Zhou Mi's "Qidong Wild Words" recorded: "In the past, when Emperor Renzong, the palace concubines said that the first month for the first month, the cake of the steamer for cooking." Song Renzong's time, because Renzong's name is Zhao Zhen, Zhen and Zheng, steam homophonic, in order to avoid Renzong's taboo, the first month was changed to the first month, the steam cake was changed to cook cake. Therefore, Wu Dailang sell cooking cakes are steamed cakes.