Do grandchildren need to burn paper money for grandparents?

The customs of every place are different, usually like this:

First, when parents are alive, if grandchildren are not married, generations are married. If you want to go to the grave, you should go to the grave with your parents.

Second, if parents are inconvenient to go or die for some reason, grandchildren will go to the grave alone.

I can't dance for generations anyway! Of course, this is just a superstitious statement!