It is hard for you to get a tourist visa for you, because it is issued to Pakistanis who go to China for family visit, the documents are required:
For Family-Visit:

1. For applicant visiting his/her Chinese spouse or relatives in China.

Notarization of spouse/relative relationship produced by a Chinese notary office and invitation letter from the relative in China or the marriage

certificate (original and photocopy) of the applicant.

2. For applicant visiting Pakistani spouse or relatives in China.

Photocopy of the identification certificate of the inviter and invitation letter from the unit/school in which the inviter works/studies in China.

3. Individual tourist visa application for Pakistani passport holders is not acceptable under present policy. The Pakistani individual tourist can join a tourist group organized by the travel agencies.