Learning institutions suggest choosing a good brand, both CET-4 and CET-6, but English tutoring in junior high schools and primary schools is mediocre, but Spark's reputation is not as good as that of other brand tutoring institutions, and most of these so-called English training institutions are fake, especially those online teaching, which is not credible. Just find a few foreign faces to pretend to be the so-called foreign teachers. I have been in this industry for so long that I know it too well. When it comes to learning English, there are really few institutions.