1. If you don't have hobbies, you can't do as much as you can. If you don't read a lot of books first, you will be at a loss or lose your preference. Broad and then deep, broad and then specialized.

2. Reading only one person's works is not good: you won't get many advantages. You must pick many flowers like bees, so that you can brew honey. If you stare at one place, your income will be very limited and impatient.