The foreign students were required to provide a standard photo, the photo's size is showed below :
https://www.nia.gov.cn/n741445/n763221/index.html
Passport-sized Photo; Photo format: JPG format, size 100-500kb, bareheaded photo, white background without border, head takes up 2/3 of the photo size, not less than 320*240 pixels, aspect ratio 4:3.