https://journals.aps.org/authors/independent-nations#china
quote:
"People's Republic of China" is mainland China; "Republic of China" is
Taiwan. Authors located in mainland China may use either of the following:
People's Republic of China
China
Authors from Taiwan may use either of the following:
Taiwan
Taiwan, Republic of China
However, "Taiwan, China" is not acceptable (mail sent to such an address
would have a high probability of being lost forever); insert "Republic of" to
remove the ambiguity.