Go to Liaocai Hotel 1, where there are various amateur training courses of Liaodong University, including Korean training courses organized by Korean Institute. The teachers are all regular Korean teachers of Liaodong University, which is quite authentic.

Blue Sky Hotel (various amateur classes run by Finance Bureau) has elementary, intermediate and advanced Korean classes, so you can go and have a look. It seems that we can audition first and then pay the money. You have to audition first. If it is taught by authentic Koreans, or by senior talents in China, don't learn it.

You can also go to a foreign language school like ariston. If there is Korean taught by Koreans, you can also learn it.

Hehe, if it helps you, give me some points.