People can visit China in 5 or 6 people group as tourists. You
should need a letter form a travel agency or tourism agency in Pakistan. So you should first gather 6 people and make a letter.
The basic requirements:
1. One fully completed Visa Application Form in Chinese or English, attached with one of the applicant's recent color photograph (30mm X 40mm)

2. Original passport with validity more than six months and minimum 2 blank visa pages;

3. You need to provide the certificate of your income or others that can ensure your travel expense in China.