Not bad. Share the experience and skills of learning mathematics online, with the participation of students from Tsinghua Peking University, and spread the efficient experience of junior high school mathematics. Xuekui Bangkai Bridge is a professional and efficient learning client software. The official version of Xuekui Bangkaiqiao app breaks the traditional learning mode, and brings together the efficient learning methods and skills of students from Tsinghua and Peking University, so that users can learn at any time, break through the learning bottleneck, and break the previous dilemma of "learning by good methods, but not knowing how to do it".