70 knots. According to the official inquiry of Schell Education, the practice and law of tax law in Schell Education is 70 class hours, one class hour is one class, and 70 class hours are 70 classes, so the practice and law of tax law is 70 classes. Si Er Education, founded on 20 19, is a young and innovative professional financial vocational training institution, focusing on the counseling service of accounting qualification examination and accounting practice courses, and providing students with high-quality and efficient financial vocational training books, courses and services. Si Er contains our own constraints and requirements, and has the brand insistence of "taking users as the center and creating value for users".