Yihang is not a formal training institution, running schools in violation of regulations and operating without a license. You can ask them if they have a formal school license issued by the education department. Yihang is a fraud school. I was cheated when I went to Yihang. Look before you leap. If you don't have a school license, they may be seized at any time and anywhere. At that time, students will have no place to cry if they want to. You spent their parents' hard-earned money.