一个辅助学习工具，集合Anki和WorkFlowy于一体。
On the web, there are tree-structure note-taking tools, and some people love them because these tools are really good at organizing information. There are also SR (Spaced Repetition) tools, and some people love them because these tools help them remember information with minimal effort and time.
LearnObit is basically a combination of these two, and the combination of these two concepts is incredibly powerful.
