As you put it, he must "affirm" his beliefs. Given that he does that, his ordination is valid. Now, if the Bishop who ordains him intends to put him under the authority of a bishop who is out of communion with Rome, there is your illicit act. But I can't imagine why the Chinese would send him to America to be educated, and then take him back to China to serve one of their bishops. It'd seem much safer to educate him themselves.
Ummmmm.....no. I have been through this already. If a man lies about his beliefs and intentions in ordination, he is not ordained, as he seesk the sarcrament insincerely. Sorry! God is not mocked.
"It'd seem much safer to educate him themselves."
Let me assure you that he wil be "safely" educated in St, Joseph's seminary. Have no fear of that.
Let he who has ears hear.