Which is better, Phuket or Japan?

Can't compare. When you go to Japan, you go to see a city and you can experience the local culture. Look at those famous buildings. They are all modern. You went to Phuket to relax. The scenery on the island is very beautiful, and you can snorkel and climb rocks. These are two different feelings, just like whether you are going to Beijing or Jiangnan. If you want to go to Phuket, I suggest you visit the travel network!