How does the woman apply for Canadian husband and wife reunion immigration in China?

Of course, you can apply and submit it to the Canadian embassy in Beijing or Hong Kong (depending on which province you are in).

There are too many materials to prepare. Besides, the situation of his ex-wife is actually very bad for you. I suggest you consult a professional immigration company.

The important thing is to prove that you and your husband really have feelings, not fake marriage.

One more question, why can't your husband become a permanent resident now? "But my husband is in China now and can't go back to Canada for a while."