The former is really two kinds of burns, the latter is not a burn. Then be able to avoid the fire can burn it? Energy, fully capable of, but must take the following measures:
(1) coating of water: In the cupping place without prior Tu some water (warm water in winter Tu). Tu cooling water can partially protect the skin, will not burn;
(2) The flame toward tank bottom: alcohol cotton flame, must be towards the tank bottom, and must not burn Guankou, Guankou do not coated with alcohol;
(3) left tank a short time: to shorten the time to stay cans, not too long, too long, easy to suction blisters, generally 3 to 5 minutes maximum not to exceed 10 minutes.