You can't. You can't quit classes in stages, because there will be an agreement when you buy classes, and you can't quit classes after you buy them. Huidao Education is an Internet education enterprise focusing on minority language learning. Previously, it focused on the offline market, and in July 2020, it opened up the field of online education. Whether it is courses or after-school tutoring, Huidao has been striving to be an industry benchmark.