How to renew Chinese Passport in Canada

I live near Toronto Canada. I am a Chinese National with a Canadian Permanent Resident card. My Chinese passport is expiring soon. I need to know if I can renew it in Canada. I need to know the procedure and what documents I need to take to the Embassy/Consulate. Also about the passport picture (the size, the background, is it the same size as a Canadian passport picture etc.). The cost and do I need to pay in cash. Is there anywhere to download the application form so I can fill it out ahead of time to save time? Any other helpful information would be appreciated. Do I need to bring my Canadian PR Card and Chinese ID Card and my soon to expire Chinese Passport? Do they keep those items until I pick up my new passport or will they take a copy.