baby going home
First of all, you need to get Birth Certificate, it takes about 4-5 months from the date you sent out the application, if you apply by mail. It is quicker to apply in person to City's registry office, but they are on strick now if you are in Ottawa. With Birth Certificate, you can apply for Canadian passport for your baby, and it takes 10 business days, so about 2 weeks, price varies by age. Last step will be to the Chinese Embassy for the visa into China, which is 4 business days, $50, and the visa is good for 6 months in China. You can have visa renewed in China if your baby needs to stay more than 6 months. Depending on the local policy, you probably need to report to the local public security bureau, it is free and just another step to follow.
Trust this answers your question.