Maple leaf card returns to China

Please don't worry! Not to mention! Let me answer your questions separately:

1 while waiting for the maple leaf card, can my mother and I go back to China first, so that my father can get our maple leaf card before going back to China?

Answer: You can go home, and your father can go home with a maple leaf card! (The answer is yes)

Do I need to collect the maple leaf card in person or send it to my home?

Answer: Maple Leaf Card is sent to the place where you live in Canada (your home in Canada), not China's home!

I came on a student visa, and my mother came on a work visa. I have emigrated now. Neither my student visa nor my mother's work visa has expired. Is it invalid?

Answer: If you and your mother are both in Canada now, you must first land in China and become a new immigrant. What needs to be emphasized here is that you must also land at the same time or later with the main applicant. Your first landing as an immigrant must be at the same time as the applicant, and you can't land independently in advance. You got it? I thought you relied on the applicant's subsidiary application! As for your student visa and your mother's work visa, they will also become invalid with the approval of your immigrant visa! I think you are a Canadian resident, so you are not an international student! You got it?