Math****

It's beautiful. I've been looking for this type for a long time. The author writes very well. It's beautiful.

The structure is clearly analyzed, very good, from shallow to deep, it tests the logical thinking ability. The overall structure is solid, not too slow, not too slow, and provides a variety of thinking paths. There is a surprise of sudden enlightenment. It is worth buying [Like]

Everyone can speak freely and comment on this novel.