Onion Math Based on in-depth study of the math knowledge system, Onion Math breaks down all the knowledge points of middle school math in detail. Each video only takes about 5 minutes to talk through a knowledge point. It also incorporates humorous plots, interesting animations and rich extended knowledge, and makes use of multimedia interactive technology to enhance learning efficiency. Onion Math will also try to design the video content in such a way that students can be inspired when watching it - for example, there is a logical system of knowledge in science as a whole, so students should try to understand the complete logical system rather than individual concepts.