加拿大政府的網站上寫的清清楚楚. 如果這位北大教授讀不懂英文或法文的話，可以郵寄到以下地址：

If you are applying from China (People’s Republic of) mail your application to:

Canadian Embassy - Visa and Immigration Section
19 Dongzhimenwai Dajie
Chao Yang District 
Beijing100600, People’s Republic of China

OR

Consulate General of Canada in Hong Kong and Macao
8th Floor, Berkshire House, 25 Westlands Road, Quarry Bay, Hong Kong

OR

Visa Section
Consulate General of Canada in Shanghai
ECO City Building, Unit 701
1788 Nanjing West Road, Jing An District
Shanghai 200040
China