When i read it at the beginning of The Dark Forest, i read very slow, and couldn't get it's meaning from here, it seems a different story from the first one, The Three Body Problem, but when i continued to read it, i find more interested in it. I was wondering why Luoji is a person that chose as the author didn't tell the answer at the beginning of it. But gradually we'll know the answer.
The description about the civilisation of human, and the question about it, the destroy and renaissance of it.
Since the author is Chinese, there are lots of description about the Chinese people, it's also a good way for everyone to know the cultural of China.