Yes Ov5 with tuition refund, this method of refunding tuition with treasury bills, is actually a new trick implemented by swindlers pretending to be training institutions on the grounds of "institutional refund". It is a fraud to buy treasury bonds and return them in the form of a 20% increase in the purchase amount. Fraudsters set up a scam in the name of "tuition refund", pulling well-known "consumer associations" and "treasury bills" into the scam, trying to enhance credibility and making it impossible to prevent.