I met an 80-year-old man on the bus with no seat. How can I persuade young people to give up their seats?

Just looking at this stuff. There is no need to show others what you mean, because if you tell others, others will look at you and the person you tell will feel humiliated. Not only will you not give up your seat to the old man, but you will also scold you. Sometimes you don't have to say it. In fact, you can use some methods, such as chatting with the elderly, deliberately saying that there are too few seats in this car, or that there are so many people in this car, so let others pay attention.