Ms.cinderella, it is hard for your son to get a student visa if you or your husband doesn't work in China. But you can have a try. First, get the admission letter from the school in China, then apply for student visa for your son, if he obtains the student visa, you can apply for a long-term L visa to accompany him, after entering China, you can also go to the local Exit & Enter Department to apply for temporary residence permit for you and your son.