01.'Heavenly Dog Eats the Moon' is a folk explanation of lunar eclipses in ancient China, belonging to a category of natural myths. Due to a lack of astronomical knowledge, ancient people imagined lunar eclipses as a huge "heavenly dog" devouring the moon, and then using methods such as beating drums and firecrackers to drive away the heavenly dog and "save" the moon. This story combines mythology, astronomical observations, and folk activities, and is still circulating in some parts of China today
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Origin of the image of Tengu
The most well-known images of Tengu today come from ancient Chinese and Japanese legends.
The earliest record in the Classic of Mountains and Seas states: "There is a beast on Yin Mountain, which looks like a raccoon with a white head and is called a heavenly dog. Its sound is like durian, and it can ward off evil." It resembles a raccoon cat, has a white head, and has a unique call, which can drive away evil spirits (later evolved into devouring the sun and moon)
The Nihon Shoki (720 AD) mentions that "Tengu" is a meteor or comet, symbolizing ominous (influenced by China). The "Turan Grass" (1331) records that the heavenly dog has a "red face, long nose, and holds a feather fan", and its image is stereotyped as a common modern monster.
In the Book of the Past (ancient Indian literature), the demon Rahu was beheaded by Vishnu for stealing the elixir of immortality, and his head turned into a heavenly dog that devoured the sun and moon, triggering a solar eclipse.