学习而用，本人学习瑞用，就是这样了，还要我打多少字啊，气死我了-learn and use, I used to learn Swedish, is the same, I would also like to play characters ah creating friction and disaffection me

字符雨，实现黑客帝国中的那种字符雨，可以学习，还可以做屏保-Characters in the rain, to achieve the kind of character in the Matrix rain, you can learn, you can also do the screensaver