Your English foundation is quite good, and your future goals are also there. But for the domestic CET-4 and CET-6, too many candidates are theoretical exams. Many students have passed CET-4 and CET-6, but they can't communicate normally. So IELTS is more popular now. If you get a good IELTS score and apply for a foreign company, the boss still values it. And you have to improve yourself. The boss saw this and appreciated you very much. Hehe,,,,,

Although I am still a student, I think everything I think is right. Therefore, I am constantly improving myself. Attend training classes and train English courses in summer vacation. Hehe, I really benefited a lot. Teachers in Beijing are just different. My spoken English and listening have improved a lot. By the way, I study in Beijing Century IELTS School. You can also learn about it. It's good. Although there are not many advertisements, you will find it really good after class.

Good luck! Come on!