The history of Halloween can be traced back to the Celtic festival of Samhain, an important festival for the Celts living in what is now Ireland, Britain and France to celebrate the harvest and welcome the winter season. Samhain marks the beginning of the Lunar New Year and symbolizes the end of summer and the onset of the dark winter season. The Celts believed that on this day, the line between the living and the dead became blurred and the spirits of the dead could return to earth to make contact with the living. To ward off these spirits, the Celts lit large fires and wore animal skins and masks with the intention of frightening off evil spirits. As the Roman Empire conquered the Celtic regions, the two main Roman festivals, Harvest and Day of the Dead, gradually merged with the Festival of Savin. In the 7th century, the Catholic Church designated November 1 as “All Saints' Day” to honor all the saints. October 31 became All Hallows' Eve, the predecessor of today's Halloween.

The pumpkin lamp is one of the most representative symbols of Halloween. Its origin can be traced back to the Irish folklore “Stingy Jack” . According to the legend, Stingy Jack cheated the devil through a clever scheme, but because of his bad behavior in life, he could neither go to heaven nor hell after death, and could only wander on earth forever. He used a hollowed-out dasheen as a lantern and lit the coals of fire in it to guide himself through the darkness of the night. After immigrating to the United States, the pumpkin replaced the daikon as the material of choice for making lanterns because it was more readily available and easy to carve. Every year before Halloween, family members and friends would work together to carve pumpkin lanterns, designing all kinds of quirky or scary faces for them and placing lighted candles in them, making them a common decoration in front of homes during the holiday.

Trick-or-treating is the most popular custom of Halloween among children. Every year on Halloween night, children dress up in elaborate costumes and knock on doors to ask for candy. If the owner does not have candy ready or refuses to give it, the children can play pranks to “get even”. The custom has its roots in the medieval tradition of souling, when the poor would go door to door on All Souls' Day (November 2) asking for “soul cakes” in exchange for a promise to pray for the dead. Today, trick-or-treating has evolved into a holiday carnival for children, who dress up as ghosts, superheroes or cartoon characters and carry bags of candy for this special night out. Families are happy to join in the fun, preparing a variety of candies to welcome the “little ghosts” that come knocking on their door.

Makeup is an important part of Halloween. In the early days, people would wear masks or strange costumes to confuse the wandering spirits and prevent themselves from being recognized and harmed. This tradition has evolved to the present day, with costumes becoming an essential part of Halloween parties and celebrations. Modern Halloween costumes are becoming more and more diverse, not only limited to the traditional images of ghosts and goblins, but also including a variety of pop culture characters such as movie stars, comic book heroes, and historical figures. Halloween costumes are no longer just about scaring people, but more about showing creativity and personality.

Ghost stories occupy an important place during Halloween. Telling scary stories is an ancient tradition where people sit around campfires and share stories about the undead, monsters and mysterious events. In modern times, this tradition continues and many people will gather to watch horror movies during Halloween. Classic horror movies such as Halloween and The Shining have become iconic entertainment during the holiday.

Haunted house adventures are one of the added features of modern Halloween, especially in the United States. Theme parks, theaters, and social groups will set up “haunted houses” during the Halloween season, decorating them with scary scenes and arranging actors to play the role of ghosts and goblins to create a tense and exciting atmosphere. By exploring these “haunted houses”, people enjoy the thrill of horror and fear.

In this game, some apples are placed in a large basin or sink filled with water, and participants need to bite the apples with their mouths to retrieve them from the water. As the apples float on the water, the participants have to bite the apples with their mouths and pick them up. Biting apples is one of the Halloween customs with various theories of origin. One theory is that it is related to the Celtic culture's festival of Samhain, when it was believed that the spirits of the dead would return to earth. To confuse the evil spirits, a game of apple-biting was practiced, in which an apple was placed in water and removed by biting into it with the mouth. This custom was passed down in European tradition and gradually became part of the Halloween celebration. It symbolizes the triumph over fear and evil, as well as the hope of a new beginning and rebirth.