找到了,应该这个是比较官方的解释
Mailing Your Application
Include four (4) mailing labels or envelopes with postal codes. The labels or envelopes must contain your
mailing address in both Chinese characters and in pinyin.
和简表一起邮寄的必须有4个地址条或者4个有邮政编码的信封,地址条或信封必须要将你的收件地址用汉字和拼音表明清楚
Mail or deliver the form and proof of payment in a sealed envelope to:
The Canadian Embassy
19 Dong Zhi Men Wai Dajie
Chao Yang District
Beijing 100600
The People’s Republic of China
Any financial claims you make may be confirmed with the National Tax Bureau or other related government
bureaus.