What do you think of Liu Tong's book?

When I was a freshman, I finished reading Liu Tong's book "Youth is Not Confused", but I didn't feel anything after reading it.

As a senior three student today, I can't remember anything written in Liu Tong's book. Suddenly it caught fire. As for why the fire broke out, I also sent a circle of friends to see what my friends think. As a result, I still didn't understand all the answers.

I feel that Liu Tong's book is about feelings, selling marketing, and has nothing to do with the content.