Why not just sell vipkid big coffee English?

Vipkid big coffee English is not sold directly:

1, vipkid Big Coffee English is not sold directly because it is necessary to fully understand the students' English level and ensure that all the contents involved in the course can be taught and have certain effects.

2. In addition, vipkid Big Coffee English also attaches great importance to providing students with a quality course experience, so it has strict requirements for recruiting teachers.