American students stay in Hong Kong.

If a China passport holder transits to the Mainland via Hong Kong, he can stay in Hong Kong for 7 days (there will be notes when he leaves the country). If seven days is not enough, you can apply to the Hong Kong Immigration Department for an extension (valid reasons must also be approved).

Next time you come to Hongkong from China and fly to the United States, you can stay for 7 days.

However, you can't go to Shenzhen first, go back to Hong Kong and fly to other cities in China. Can only fly from Shenzhen to other cities in China.

Transit refers to flying from a third country to China, or from China to a third country, instead of flying from China to Hongkong and then to China.

If you hold an American passport, you can stay for 30 days at a time.