In fact, none of the course contents are repetitive, and they are all different, so there is no so-called plagiarism. It's just a matter of priorities. Doing it first doesn't mean that only one person will always do it. It's simple. Among these training platforms, I am more concerned about helping classes, because they are all front-line foreign trade. I'm teaching now, but I still insist on doing foreign trade. Other training is full-time training.