Octopus snake is a legendary creature in ancient Japanese mythology. "The Book of Japan" writes "Eight Snakes"; Write "Eight Things about Snake Girl" in Historical Records; Known as the "big snake" (ぉろち); "ぉ" means "mountain peak", "ろ" means "harmony" and "ち" means "spiritual strength", which can be called "something with spiritual strength". The pseudonym ヤマタノォロチチチチチチチチチチチチチチチチチチチ Legendary deeds, when Su Zun (Su; SUSANOO and Su Zuo Nai Yuan Zun of たけはやすさのぉのみこと were exiled from Gao Tianyuan to Izumo, along the "Fat River". テナヅチ), the old couple originally had eight daughters, but the first seven were eaten by eight male snakes. Now, the old couple are expecting the same fate. クシナダヒメ) sobbed. Su Zun volunteered to subdue the coming Hachi snake, on the condition that she would be betrothed to him when it was done. In order to protect Qi Daotian Ji, Su Zun turned her into a comb and put it in her hair. Then tell her to rub milk with her feet and make strong liquor with her hands. Eight doors were chiseled in the wall, and barrels filled with spirits were put respectively. As soon as the 8-foot serpent who arrived at the scene later smelled the wine, the 8-head serpent got into the 8 doors to drink hard liquor, and then fell drunk and couldn't sleep. Su Zun took the opportunity to hold the "Ten Fists Sword" and beheaded the serpent with eight fists in advance. When he cut his tail, the blade of the ten-boxing sword hit a gap. When he cut off his tail one by one, he found that there was a hard and sharp broadsword in it, which was ぁめのむら). After that, Su Zhanwu married Qi Daotian Ji and settled in Yunyun. There is a myth that the metaphor of river flooding is that these octupole snakes represent "river flooding" The sandbar on Fayichuan is a kind of "scale sandbar" similar to snake scale, which is described as "big snake" because of the winding appearance of the river. The flooding of rivers in a fixed period of time will destroy (devour) rice fields (eight girls), and repelling the serpent symbolizes the success of water control. According to another theory of ironmaking culture, these snakes may also reflect the "ironmaking culture" of ancient Yakumo (now Lai 'an City, Shimane Prefecture). Octopus snake may also be a metaphor for iron ore (the original head). The appearance of the snake's abdomen bleeding is the muddy appearance of iron sand (raw material) mixed in the river, while the iron sword (finished product) in its tail is hard.