Is it convenient to travel by suitcase or backpack?

I think, if it is a short trip, you can decorate snacks, daily necessities and so on with a backpack, but if you go to a distant place, the suitcase is better, the backpack is easy to drop, and you can't take too many things. It's best to bring a big travel bag or suitcase+small bag, depending on personal circumstances. Have a nice trip!