In fact, the most cost-effective is the brick question bank newly launched by Tuhua Online School.
Brick question bank has a powerful function, which collects the real questions of national examinations in various provinces and cities over the years. In addition, the most powerful function of the brick question bank is online PK. You can bring your friends with you, or you can watch and practice PK with others directly on the platform to master the knowledge points faster. The teacher said: with the brick question bank, you can pass without reporting for class. I think, might as well give it a try! You can consult me if you have any questions.