同学们一定看过这样的气功表演场面：一个演员在钉板上（即板上密布着较粗的铁钉），身上还压着一块又大又重的石板，另一个演员轮起一把铁锤，猛力向石块砸去．碰的一声，石板砸断了，此时同学们一定非常紧张，以为石板下的人肯定没命了，可是他却没当一回事似的，一点也没受 The classmates must have seen this qigong performance scene: an actor is on a nailed board (the board is covered with thick nails), a large and heavy slate is pressed on the body, another actor turns an iron 4. The hammer slammed into the rocks. When the slate snapped, the students must be very nervous. They thought that the people under the slate were definitely dead, but he didn’t think it was the same thing.