You need to issue a receipt to pay the tuition fee. The receipt is the detailed information and basis of your charge. Only when you have a receipt can you prove that you have paid the tuition fee and pay it clearly. A receipt is not an invoice for payment. Some expenses need to be invoiced, and you can apply for an invoice with a receipt, so it is also very important. You must take good care of it. This is the voucher for paying tuition.