does my baby need a exit permit to leave China?

I am a CDN citizen and my wife is a Chinese national. Our baby girl was born in Guangzhou China Nov2015. We did not apply for a Chinese passport or the Houku. Instead I went to the CDN consulate in Guangzhou and got her a CDN citizenship certificate and a CDN passport. My wife's PR application to Canada just got approved recently. We are planning to land in Canada this summer or early fall. Does my baby girl need to get a one-time exit permit from the Guangzhou public security bureau exit-entry office so she can leave China? Also does my wife need a exit permit as well? Thank you!