Must be quite a valuable book...hope they know kungfu as well!
"They guard that book" was not accepted. I don't understand why.
How would you say, "when no one is watching, I will steal it?"
'When no one is looking' might be
Ketika tidak orang melihat
When no people look...
Remember in Skyrim when you stole spellbooks and the wizards would start chasing you and cursing you?
Why not "those books"?
The book must be very expensive or valuable.