Halloween is one of the Catholic and Orthodox festivals and a traditional festival in western countries. Every year, 1 1 month 1 day is a Catholic holiday to celebrate all saints or All Saint's Day. On Halloween, the eve of1October 3 1 day is the annual harvest festival of Celts, which symbolizes the end of a year and the beginning of a new year.

At that time, the Celtic people more than 2,000 years ago were most afraid of the night of1October 3 1 day. They believed that the life of the world was dominated by gods, and Samhain, the god of death, would return to the world with the dead every night of1October 3 1 day.

Therefore, on this day every year, the Celts express their respect to the sun god, because the sun god makes their grain harvest to cope with the coming winter! However, this night is also the most powerful day for evil spirits. According to legend, every year on this day, all the laws of time and space will fail, making the yin and yang worlds become one. Therefore, this is the only chance for wandering souls to find a scapegoat.

On the night of1October 3 1 day, the living Celts will put out the fire at home in order to avoid the search of the soul, create a cold and gloomy environment, and deliberately dress themselves up as ghosts with costumes made of animal heads or fur, making terrible noises in their mouths, in an attempt to scare away the soul and make it impossible for the soul to tell who is alive, and not to find body double. After this night, the next day is Halloween, and everything will be calm again.