Job Recruitment Website - Ranking of immigration countries - I will transfer from Mexico to Los Angeles in February, and then fly to Hong Kong. Do I have to go through the customs formalities again at Los Angeles Airport?

I will transfer from Mexico to Los Angeles in February, and then fly to Hong Kong. Do I have to go through the customs formalities again at Los Angeles Airport?

No need! Because it's a transit, if it takes a long time, your friend can stay in Hong Kong for seven days without a visa.

10. China passport holders who travel to and from other countries or regions through Hong Kong are allowed to stay in Hong Kong for seven days each time, without obtaining an entry permit in advance, but they must meet the general entry requirements, including holding valid entry documents for their destination and confirming that they have booked a onward train/boat/air ticket for overseas.