Mr.qamar, for Canadian applicants, the visa requirements are different from Pakistani applicants, if you apply for tourist visa, you just need to provide:
1. Original passport with validity more than six months and minimum 2 blank visa pages;
2. One fully completed visa application form in Chinese or English, attached with one of the applicant's recent color photograph (30mm X 40mm)
3. travel information: your hotel booking, return flight ticket or through ticket.
4. Pakistani visa or Residence permit or alien registration card.