As a member of the Berne Convention, China applies the principle of national treatment: works by nationals of other member states, and works first published in a member state, automatically receive protection under the Copyright Law at the same level as Chinese works. The Regulations on Implementation of International Copyright Treaties set out several additional specific arrangements for foreign works.
Ownership still has to be proved. Registration is not required, but proof of ownership is, once you enforce. Ownership documents originating abroad — assignment agreements, employment records, records of the original creation — generally need notarization, plus either an apostille or consular legalization.
Fix the Chinese and English names early. Settle the Chinese rendering of both the title of the work and the author's name before you need them, so that no one can argue the work in your evidence is not the work you are asserting.
Register the core works anyway if you plan to operate in China for the long term. It lowers the cost of proof in litigation and in platform complaints.
