Update for profile required (can use /v2.0-endpoint, but requires tenant application registration) - we won't be able to provide any out-of-the-box experience here (cannot use Azure AD Global-Registration in China AAD)
If you have experience in China AAD and importing Global AAD App Registrations into a China AAD Tenant, please reach out to us.
Provide our Microsoft Global App Registration Manifest for customers to get exactly the same configuration so we can provide a simple configuration file
OneDrive works fine
Sharepoint API differs from expected Global API. Requires review.