Student visa requirements

Requirements
1. Applicant's original passport valid up to at least six months with at least one blank page.
2. One truly completed Application Form.
3. Please affix one recent passport style color photo with full face, front view, no hat, and against a plain light background on the application form.
4. Original and a copy of approved Foreign Student Visa Application Form JW201 or JW202 (for X1 appliction only).
5. Original and a copy of Admission Notice from the university or Chinese school. Note: for foreigners who want to apply for Chinese Medical Internship, the original and a copy of Application Form for Medical Internship and Admission Notice for training in practice issued by the university are required

You need to meet all the above requirements. But I haven't heard about the mentioned minimum amount of study time.