I suggest you watermark the photos, and you can only refund them with XX educational institutions, and the time is XXX. Please indicate before sending, please protect my privacy and don't use it for other purposes.

In addition, screenshots will be taken of materials and photos sent to educational institutions, as well as screenshots of refund receipts.

1 is the information for inquiring about refund. 2 is to protect educational institutions from doing things. 3. There are screenshots that can be used as a basis.