What is the original shape of moon cakes?

Moon cakes, the holiday food in China. At first, it was a cake shaped like a full moon, and its appearance was round, indicating reunion. Later, there were squares or other shapes. The outer layer of the moon cake is wheat flour, and there are various fillings in it. Eating moon cakes on Mid-Autumn Festival is a traditional custom of Chinese people all over the world, just like eating zongzi on Dragon Boat Festival and dumplings on Lantern Festival. Cantonese-style moon cakes, Soviet-style moon cakes and Beijing-style moon cakes are the most famous. In addition, ham moon cakes (Yunnan), chili onion moon cakes (Jiangxi), crispy moon cakes (Hunan), wax gourd moon cakes (Sichuan), crystal moon cakes (Shaanxi), Sanbai moon cakes (Heilongjiang), seafood moon cakes (Shandong), shredded chicken moon cakes (halal style) and iced moon cakes (Hong Kong) are also famous products. Traced back to ancient times, ice skin and mini mung bean paste moon cakes were eaten as sacrifices in the Mid-Autumn Festival. Due to the passage of time, moon cakes have been alienated into food and gifts for the Mid-Autumn Festival. The word "moon cake" was first seen in Liang Lumeng by Wu in the Southern Song Dynasty. At that time, the moon cake was just a cake-shaped food like Ling Hua cake. Later, it evolved into a circle, which meant reunion and beauty. The West Lake Tour in the Ming Dynasty: "August 15th is called Mid-Autumn Festival, and people give each other moon cakes to show their reunion." Deeply welcomed by the people. According to legend, in the Yuan Dynasty, the Han people were miserable under the rule of the Yuan people, and Zhu Yuanzhang fought against the Yuan. However, the Yuan army was so tightly controlled that the insurgents could not deliver the news. So, Liu Bowen presented a plan to give each other moon cakes in the Mid-Autumn Festival. There was a note in the moon cakes that read "Kill the Tartars on August 15th" as a signal of the uprising. In the Qing dynasty, there were books describing the making methods of moon cakes in detail. Qing Yang Guangfu wrote: "The moon cake is filled with peach, and the ice cream is sweet sucrose cream". Egg yolk lotus seed cakes are classified according to their origin: Beijing flavor, Guangdong style, Soviet style, desktop style, Yunnan style, Hong Kong style, Chaozhou style and even Japanese style. According to taste: sweet, salty, salty and sweet, spicy; According to stuffing: egg yolk lotus seed paste, five kernels, red bean paste, rock sugar, sesame, ham, fruit moon cake, etc. According to skin: there are three categories: pulp skin, mixed sugar skin and cake skin; According to styles, there are smooth moon cakes, lace moon cakes, moon cakes from the Monkey King, moon cakes from the birthday girl and so on. New moon cake: Ice-covered moon cake: Its characteristic is that the crust does not need baking, and it can be eaten after freezing. Fruit-vegetable moon cake: characterized by fruit and vegetable as the main filling, smooth and soft filling, different tastes, fresh and sweet and palatable. Seafood moon cake: contains abalone, laver, ray column, etc. It tastes slightly salty and is famous for its sweetness. Liang Na moon cake: It is made of lily, mung bean, tea and moon cake stuffing, which has the functions of nourishing and beautifying. Coconut milk moon cake: the stuffing is freshly squeezed coconut milk, light milk and melon and fruit, with low sugar content and oil content and sweet taste. Tea moon cake: also known as the new tea ceremony moon cake, with new green tea as the main filling, the taste is light and fragrant. Health moon cake: it has a good health care effect on the body. There are ginseng moon cakes, bird's nest moon cakes, calcium moon cakes and so on. Pictographic moon cakes: vivid in appearance and deeply loved by children. Taste and store in moderation. Eat fresh moon cakes. Ice-covered moon cakes should not be kept at room temperature for more than two hours. The method of making moon cakes is to take water-oil dough or ghee dough extract as skin, fill it into oblate green embryo, press it in a mold to make the surface appear convex and concave, and eat it after baking. Its skin is made of various crispy methods, and there are various crispy skins; Its stuffing is made of jujube paste or five kernels, red bean paste, pine nuts, ham, spices and so on, which become stuffing hearts with different flavors.