Sky lanterns, also called Kongming lanterns or wish lanterns, are paper balloons with a small fire (candle/wax) at the bottom that creates hot air, making them float up like mini hot air balloons. Used for centuries in Asian cultures for signaling and celebrations, they're now popular for festivals, weddings, and memorials globally, often with wishes written on them, but their use is restricted or banned in many places due to significant fire hazards and environmental concerns
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