Drop a few drops of zippo lighter oil evenly on your palm (don't drop too much on your palm) and light it with a lighter. The burning time should not exceed 20 seconds, or you will burn your hands. To put out the fire, just hold your hand into a fist and repeat it once or twice. I advise novices not to buy this kind of magic. After all, others can easily see through it. Fire magic suggests buying a finger fire or holding a fire.