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One day, after school was over, Li Ming and Wang Ping were walking in the street when they saw an old man falling from the bike. He hurt his leg and it's bleeding. lots of passengers gathered around. Some suggested to move him under the tree. Li Ming did not agree with them, he said for the safe they ought to check the old man first. At this moment, the old man is out of breath. Li Ming make the mouth-to-mouth way and the woker tried to stop bleeding. after ten minutes' effort, the old man tremble a little. Li Ming asked Wang Ping to call the First Aid Centre at the same time. A few minutes later, the doctor came here and said what Li Ming did was right.