Want to invite my son to visit relatives in Japan, ask a reason. thank you

You have a work visa, right? How long do you want your children to stay? Is it a short trip or a family accommodation? I don't know how old the child is, so the reason book must be true.

You have a good reason to say that you have been separated from your family and children for a long time. As a father, you miss your children. That's enough. There is no need to write about Japanese culture, especially in the short term. They look at the frequency of your return to China and the time when your children leave. In this respect, Japan is more humane. Mainly write that you miss your children very much.