1 More than 2,000 years ago, Christian churches in Europe designated 1/month1day as the day of all saints in the world, and hallow means saint. It is said that since 500 BC, Celts living in Ireland and Scotland have moved this day forward, that is,1. They think that this day is the official end of summer, that is, the beginning of the new year and the beginning of the harsh winter. At that time, people believed that the dead would return to their former residence on this day to look for the Holy Spirit in the living, and this was the only hope for people to be reborn after death, while the living were afraid of the dead soul to seize life, so people put out the fire and candlelight on this day, so that the souls of the dead could not find the living, and they dressed themselves as monsters to scare away the souls of the dead.

2. Halloween is actually a festival to praise autumn, just like May Festival is a festival to praise spring. Druid, a priest in ancient Gaul, Britain and Ireland, had a grand festival to praise autumn, which lasted from midnight on 1 October 3 1 to the next day1month1day. They thought that Saman, their great god of death, called all the ghosts of those who died that night, and these evil spirits would be punished by being born as animals. Of course, just thinking of such a ghostly party was enough to make those simple-minded fools tremble with fear at that time, so they lit a bonfire and closely watched these evil spirits. That's how the saying that witches and fooling around were everywhere on Halloween began, and some people in some isolated areas of Europe still believe this is true.