What should I do after the system prompts me for the original passport?

The so-called "original passport requirements" (figure 1) is actually a circular letter sent by CIC, asking you to submit the original passport for marking. So, what should I do next?

Figure 1

The specific materials are as follows:

Original passport;

A printed copy of cic mail "original passport application letter";

Service agreement http://www.vfsglobal.ca/Canada/china/pdf/China_CONSENT.pdf? Note: I need my signature;

Remittance receipt;

A piece of white paper with your return address, contact information and e-mail address written on it;

Fees (including labeling fees and courier fees, which can be saved if I can get them myself if I have the conditions);

You can look at the website of Canadian Visa Center in China, which has remittance account information and passport mailing address.