Partner with Canadian Permanent Residence

Dear,
Thank you in advance for all the helpful information.
I am currently holder a Canadian Permanent Residence (Syrian origin). Living and working in canada.

Planing to get marriage with my three years Chinese girlfriend who lives currently in china.

Please advise me from where i shall strat ? Would the chinese consulate or embassy in Canada assist me to start my procedures?
I highly appreciate any advice.
Thank you again