11月1日是万圣节，也称为Halloween。它源于古代凯尔特人的传统节日，庆祝秋天的收获和新年的开始。如今，万圣节已经成为了一个流行的文化节日，在全球范围内庆祝。人们会穿上各种各样的服装，如鬼魂、吸血鬼、巫婆等，去参加派对、游行和化妆舞会。此外，传统上，万圣节还有“不给糖果就捣蛋”的习俗，孩子们会穿着万圣节服装，到附近的街区敲门要糖果，否则就会对居民捣蛋。

November 1st is Halloween, also known as All Hallows' Eve. It originated from the ancient Celtic tradition of celebrating the harvest and the beginning of the new year. Today, Halloween has become a popular cultural holiday celebrated worldwide. People dress up in various costumes such as ghosts, vampires, witches, etc., to attend parties, parades, and costume balls. Additionally, traditionally, Halloween has the custom of 'trick-or-treating,' where children dress up in Halloween costumes and go door-to-door in their neighborhoods asking for candy, otherwise they may play pranks on the residents.