Thanks again for the recommendation. I went to my appointment today and got a pick-up slip that confirms the 10 year visa (well, actually 8 year somehow? I don't know if the embassy will actually give me until the end of my passport) and 120 days per entry.

EDIT: I do want to add before I forget. These were the docs that I had to bring with me to the appointment at the Vancouver Visa Centre for a Q2 visa:

1. Appointment confirmation (you get a PDF when you create an appointment with a barcode at the top)
2. Full Visa application, sign the first and last pages (also don't forget your High School information... I missed that and had to write it down with a pen)
3. Invitation letter using format from their website from my mother-in-law, and photocopy of both front and back side of her Chinese National ID
4. Current Canadian passport + photocopy, additionally as I recently became Canadian, I also had to provide a copy of my Canadian Citizenship certificate.
5. Old passport (my other nationality) with previous Chinese visa (was single-entry, already expired visa) and photocopy of old passport and visa (they kept my old physical passport as well)
6. Driver's License + photocopy.
7. A copy of my wife's passport + copy of marriage certificate. They also wanted to see proof of relationship between her and my mother-in-law, but after letting the agent know that she doesn't have a birth certificate, they said it was ok.
8. A physical picture in the required size.

They asked me a bunch of documents they shouldn't be asking for (like proof of kinship for Q2 visas or Citizenship Certificate) but thankfully I had all of them with me so I just handed them over when requested. Will update once I pick up my passport.