Most of the children just agree to live together with the elderly and do not get a certificate. The "contract marriage" is more popular in society.
Contract marriage means that after living together for a few months or a year, if the feelings are harmonious, they are not noisy, they can understand and help each other, get along in harmony, and their children will not interfere in their personal lives, so they can get along for a long time.
Otherwise, you can go back to your home, stay away from each other, have no emotional entanglements and economic exchanges, and have no future trouble.
If two elderly people of the opposite sex are together and live a life similar to that of an unlicensed couple, the children will not only reduce the pressure of their support for the elderly, but also enable their parents to live the old age they want, killing two birds with one stone. Why not?
If the elderly get married, it is impossible for the vast majority of children to agree. The most important and crucial issue is the property ownership of the old man after his death. At that time, noisy was inevitable.
There are also some people who are not open-minded enough in society, and more or less they have some sarcastic remarks, which sound terrible.