Status Updates From 给忙碌者的天体物理学

chapter 7 on elements and chapter 10 on planets absolutely ripped

I like it, but there is a lot of information packed in here. I have found myself reading but not retaining and need to re read the same couple lines multiple times just to understand what it is saying. As an engineer and a fellow space enthusiast I really wanna like this book I do. But I feel like the topics aren’t really explored and explained properly.