Questions about typography.

Because it's a novice.,So I don't know a lot of things.,Just read the book review area.,There's a book friend who gave me an opinion.,Said that my typesetting is very uncomfortable.,I went to see it myself.,Sure enough, it's very uncomfortable.,Since the opinion is good.,Then we have to accept it with an open mind.,So it took me more than an hour.,All the chapters that were sent before were re-arranged.,Although it's very tired.,But after all, it's my mistake.,Thank you for supporting my book friends.,Newcomers need your support.,Recommendation and collection are even more needed.,Thank you!