Can China Catholic Church only have electronic receipts without contracts?

You can't. China public education is a large-scale multi-category vocational education institution. The company bravely undertakes the mission of the times, constantly creates new markets and serves the society in a friendly and altruistic way. Electronic receipt is a written form that conforms to the contract law, and its contents should cover the payer, consignee, delivery reason, delivery content and delivery time.