Men are old, and women are old. In China, children's marriage is a major event for parents, and the elderly are duty-bound. But children often have their own ideas, and there are often inconsistencies between the two generations. Parents' worries will not be recognized by their children, and even fierce conflicts will occur. We can only play the role of guidance and advice, persuading parents all over the world to let their children decide their marriage. Because they want to have a common language, they know a lot, and they can form a family and be very happy. If it is an old man, it may be unhappy.