In Africa, Asia, Oceania, North and Central America, and South America, the symbols are connected by the lines of rainbow serpent, two snakes, flood, rain, and thundercloud.

"Degei of Fiji tradition"
The rainbow serpent of the Fiji Islands in Oceania is called the creator god Degei, the god who caused the flood in anger, and also the god who helped the eight survivors of the flood by putting them on the fruit of Bontan.

The gods whose supreme degei is Degei are called Karou Vu. In Fiji, there is a building with a high roof called Bure Kalaw. Bure means a house, and Karou means a shrine with the meaning of a god. Here God comes down from heaven and asks for his wishes.

"Mau of West African folklore"
In West Africa, the goddess Mau (Mau), the creator god, first created a snake, which is wrapped around the seabed after helping to create the world. The rainbow is an arch of this snake on the heavens, and it also has the role of making it rain.

"Haiti folklore"
The rainbow serpent of Haiti's folklore in the Caribbean Sea is said to have been transmitted and changed by African residents.

"Ixchel of the Maya civilization"
The goddess Ixchel, who is called the rainbow lady of the Maya civilization in Mexico, is the goddess who controls floods, rainbows, childbirth, etc. in Maya mythology.A snake is placed on her head and crossed bones are depicted in an embroidered skirt.When she gets angry, it rains heavily and causes a flood.A snake was also seen on her head in Aeon.

"Native American folklore"
According to the Shoshone folklore of Native Americans (Indians) in North America, rainbows are created by large snakes rubbing their backs against the sky, causing rain and snow.

"Tupari in the Mat Grosso region of Brazil"
Among the Tupari,isbelieved that whena human dies, the pupilPavid does not walk on the ground like a living human being.His path to the Kingdom of the Deadfirst climbs over the backsBecause it's a rainbow. ( Two pairs of snakesoften stretch their backs high into the sky.When it rains, it's visible to everyone. 
Until 1948 , the Tupari tribe was an undeveloped tribe with little contact with whites )

"Chinese tradition of rainbows and rainbows"
Chinese snake gods of rainbows and rainbows.The reason why "rainbow" in Chinese characters is "Mushihen" is that the rainbow was considered to be a kind of dragon in ancient times, and the male was therainbowis said to be the body of this dragon, and is written in Chinese characters for males and females (both are Kogei).In other words, the rainbow is two snakes.

"Shimenawa of a Japanese shrine" Shimenawa of a shrine
is a barrier that is stretched to separate sacred places, and is in the form of a copulation of two snakes.Note: Cumulonimbus also represents thunderclouds.The zigzag white paper shide represents the lightning bolt that originates from the thundercloud, and the walla between the paper shide represents the rain from the thundercloud.