Q: I'd like to confirm whether my upcoming trip is eligible for the 240-hour visa-free transit policy. I will be traveling as follows: United States>Shanghai>Hong Kong>US.

Also, can you confirm whether traveling from Shanghai to Hong Kong by train is fine?

Is there a fee for the temporary entry permit?

A: Your trip meets the requirements for the 240-hour visa-free transit policy.

Citizens of eligible countries, including the United States, who hold an ordinary passport valid for at least three months and an onward ticket with a confirmed seat and departure date to a third country or region within 240 hours may apply to the immigration inspection authority for a 240-hour temporary entry permit upon arrival.

Issuance of the temporary entry permit is subject to on-site inspection. There is no fee for the temporary entry permit.

Please note that you may travel from Shanghai to Hong Kong by high-speed rail. However, you should book your train tickets in advance so they can be presented for inspection upon entry.

Source: Shanghai General Station of Immigration Inspection