It is not correct to accept students' orders in large-scale open online course education. It's just a publicity stunt to take orders for massive open online courses. In order to make students think that they have a chance to make money, they should pay the registration fee first, so that they can make money and then learn skills. When the order is received, the number of orders is very small, so the statement that a large number of open online courses take orders is not valid.