Found this old book about Linux in my grandma's bookshelf, it's pretty cool.

It says

"Linux
Operating System (操作系統)
Core (kernel?) Analysis" (內核分析)

On the side, top down, (also I'm typing trad because I can't write simplified).
"Computer textbook" (計算機教本).
"Beginner" (入門).
"Increase" (提高).
"Master (verb)" (精通)

roughly translates to Linux operating system's core analysis

Google translate says, it's (simplified) Chinese.