The predecessors divided dragons into four types: those with scales called dragons, those with wings called Ying Long, those with horns called dragons, and those without horns called dragons. Qiu: Generally speaking, the little dragon without horns is called Qiu Long, which is a growing dragon. Therefore, the ancient literature notes: "Without horns, it is called Qiu, and with horns, it is called dragon." The other is that the young dragon is called Qiu only after it gives birth to horns. Although there are differences between the two statements. But everyone calls the growing dragon Qiu. Others call the coiled dragon a kind of dragon. Pan Guo: it is a snake-like monster of the dragon genus, and it is an early dragon without horns. In Guangya, there is a description of "killing dragons without horns". There are also two kinds of views on the dragon, one refers to the yellow horned dragon, and the other refers to the female dragon. In the biography of Han Sima Xiangru, there is a note that "the red dragon is also a female dragon", so there is a combination of dragon and dragon for decoration on the unearthed Warring States Yu Pei, which means mating between men and women. From the Spring and Autumn Period to the Qin and Han Dynasties, bronze wares, jade carvings, bronze mirrors or buildings are often decorated in the shape of flat flies, which are single flies, double flies, three flies, five flies and even group flies. Or as a title card, or as a ring, or as a book. In addition, there are various changes such as Bo Gu beetle and ring beetle. Jiao: Generally speaking, it refers to scaly dragons that can cause floods. According to legend, Jiaolong's water can make clouds and fog and soar into space. In ancient Chinese, it is often used to mean that talented people get the opportunity to display their talents. There are different opinions about the origin and shape of jiaozi in classical literature, some say that "the dragon has no horns and calls it jiaozi", while others say that "the scales call it Xiaolong". The third volume of "Mo Ke Ways the Rhinoceros" is more specific: the dumpling is shaped like a snake, its head is like a tiger, and its elders are tens of feet. Most of them live under the stone cave in Xitan, and the sound is like a cow. In Liu Yiqing's Shi Shuo Xin Yu in the Southern Song Dynasty, there is a story that Zhou Chu went into the water for three days and three nights to chop dumplings and came back. People often say "dragon", but in fact "jiao" and "dragon" are the names of 1 legendary deified creatures at different ages: "jiao" when they are young, and "dragon" when they grow up. Although they all have great power, they are different in essence. Ceratosaurus: refers to a horned dragon. According to "The Story of Different Stories", "Jiao turned into a dragon in a thousand years, and dragon five turned into a horned dragon in a hundred years", and horned dragon is the old man among dragons. Ying Long: The winged dragon is called Ying Long. According to "The Tale of Different Stories", "dragon five was a Ceratosaurus for a hundred years, and Ying Long for a thousand years", Ying Long was the essence of dragons, so he grew wings. According to legend, Ying Long was the dragon of the Yellow Emperor in ancient times. It was ordered by the Yellow Emperor to crusade against Chiyou, and killed Chiyou to become a hero. In Yu's flood control, Shenlong made contributions by sweeping the floor with its tail and diverting floods. This Shenlong is also called Huanglong, and Huanglong is Ying Long, so Ying Long is the hero of Yu. Ying Long is characterized by wings, spiny scales, long head, small nose, eyes and ears, large eyes, high eyebrow arch, sharp teeth, protruding forehead, thin neck, long tail tip and strong limbs, just like a winged Chinese alligator. The image of Ying Long often appears on jade carvings in the Warring States period, stone carvings, silk paintings and lacquerware in the Han Dynasty.