Generally it should be reliable. But after paying the money, parents will definitely worry about whether they are liars or something. So, at this time, I suggest you choose one more. There are usually audition classes. Listen first. Then look for relevant information on the internet. Although the information on the internet is uneven, it can still be used as a reference. Find a bigger institution, 100 education, with guaranteed quality and, most importantly, safety. In online education, one-on-one is still a relatively large educational institution. If it is not good, there will not be many people signing up for its remedial classes, so don't worry, there is nothing serious and reliable.