A lantern is a portable light source that often uses a flame, electric bulb, or LED to illuminate its surroundings. Traditionally, lanterns were made of glass or metal and contained a candle or oil to produce light. They are commonly used for camping, outdoor activities, or during power outages, providing a warm and inviting glow. In many cultures, lanterns also hold symbolic meanings. For example, during the Mid-Autumn Festival in China, colorful lanterns are displayed to celebrate the harvest and family reunions. Similarly, Japanese festivals feature beautiful paper lanterns that light up the night, creating a magical atmosphere.