Cema is a catti exam for national translation qualification certificate, and it is a training institution worth choosing in professional training. Teachers who teach courses for the catti exam have all passed the catti exam, and they can exchange and learn a lot of real and useful things, covering many fields, and some details can't be learned in books.
The teachers in Changsha are very good and have good teaching experience. You can choose. There, the teacher can teach you many skills about interpretation, such as taking notes and logical analysis. And you need to practice by yourself after class. If you have the opportunity, you can practice on the spot and really communicate with foreigners as an interpreter.