I come from Luoyang. I want to travel to Hainan and then to Hong Kong. What formalities do I need to go through? Ask for advice. .

You don't have to go through any formalities to play in Hainan.

However, Hong Kong, a residential area in the Mainland, must apply for a Hong Kong and Macao Pass. Go to the exit-entry administration office where your account is located. For the first time, you need to apply for Hong Kong and Macao Pass, ID card and personal photo. In the future, you only need to endorse, and online endorsement is ok, which is very convenient.