Jack-o'-lantern black is a tradition, and pumpkin is also a symbolic symbol of Halloween. Pumpkins are orange, so orange has become a traditional Halloween color. Carving pumpkin lanterns with pumpkins is also a Halloween tradition, and its history can be traced back to Ireland. Legend has it that a man named Jack was so stingy that he couldn't go to heaven after death, and because he made fun of the devil, he couldn't go to hell, so he had to wander around with lanterns until the day of judgment. Thus, Jack and Jack-o-lantern became the symbols of cursed wandering souls. In order to scare away these wandering souls on Halloween, people carve terrible faces with turnips, beets or potatoes to represent Jack holding lanterns, which is the origin of pumpkin lanterns. After the Irish moved to the United States, they began to carve pumpkins, because pumpkins were more abundant than turnips in autumn in the United States. If people hang pumpkin lanterns on the windows on Halloween night, it means that those who wear Halloween costumes can knock on the door and ask for candy.