On one occasion I sat on the subway ah, next to me there is an old man is doing, this time up a very heavy bag with a lady, I did not expect the old man even stood up to the lady said, you sit down, the lady said the old man or you sit down! The old man insisted that the lady to sit down, and said to the lady you work a day quite hard, I also have nothing to stand when the activities of the muscles, I did not expect the old man was so generous, so kind, really let me for the moving ah.