1. Open the photo in the hands of the light and shadow magician.

2. Select "Crop" —— Select "Crop by Aspect Ratio" —— Crop photos according to the ratio of width 5 to height 7 (to ensure that uploaded photos are not deformed and prevent people's photos from deforming).

3. Select "Zoom" to zoom according to pixel requirements. (Check "Keep the original aspect ratio", and then enter 100 at the width (pixels).

4. Select "Save As" after adjustment and rename it to prevent the original photo from being changed. Click "Save" to find "Limit file size" in the option of "Save image file" that pops up next, put a box in front of it and enter the required "30" K.

This completes the requirements for photos. Please try uploading again.