Jin Feng Classroom is a hobby course online learning brand under Beijing Jin Feng Tong Yuan Software Technology Co., Ltd., which is committed to combining excellent team resources with the teacher resources of top art colleges to provide professional, interesting and informative online courses for users of a wider age.

Now there are rat droppings in all walks of life. This course is formal, but I think we should first see if they have a formal business license. Then the teacher has a formal diploma. Then after paying the money, you must have a formal invoice and receipt.