Two pairs. Ding Sheng cake is a traditional cake in Jiangsu and Zhejiang, which belongs to Jiangsu and Zhejiang. Its color is reddish, soft and fragrant, with sweet bean paste flavor. According to relevant information, a box of two pairs of housewarming cakes and steamed buns is the most aesthetic way for human beings. In Changshu, there is a popular cake shaped like an ingot called Ding Sheng Cake. Whenever people welcome their relatives to move, they still keep the habit of sending Ding Sheng cakes as a sign of good luck and celebration.