The competition is fierce now. Most well-known English training institutions in Guangming New District of Shenzhen will provide free audition classes or experience classes for everyone to choose from because of their good teachers and high teaching level. I know the following better organizations have such arrangements:

For advanced oral training, you need to register in official website, fill in the detailed information and apply for a free experience class, and then arrange to attend a free experience class at the nearest teaching point by phone.

For example, ef, weber and wall street.

Online oral English training, you only need to register on the website to participate, and you don't need to make an appointment, because most of them are formal classes, and you can participate directly on the website at night.

Such as: Lezhi Online

I recommend authoritative and distinctive ones. Anyway, other English training institutions, large and small, in Shenzhen Guangming New District have this kind of setting, so you can go to official website to apply for experience in person. It's free anyway. In short, choosing an English training institution is to find the one that suits you.