If you are applying for a Chinese visa for the first time, you should provide the last original Chinese passport, as well as two copies of data page of both Canadian passport and Chinese passport (on the same page).
If you have obtained Chinese visas before and apply for a Chinese visa with a renewed foreign passport that does not contain any Chinese visa, you should present the photocopy of the previous passport's data page as well as the previous Chinese visa page (If your name on the current passport differs from that on the previous one, you must provide an official document of name change).
Note: Applicants who cannot provide the original and copy of your last original Chinese passport should submit the Canadian landing paper and Canadian Citizen Card (Original and photocopy). If you are submitting an application for your child who is adopted, please also provide relevant supporting documents.