Not very.

[ Xie Lian pulls a blanket over his lap and slouches against the comfortable couch in the half-circle alcove, content to watch Alhaitham get cosy wherever he wishes. He gestures to the small pile of books collected on the coffee table. ]

I've ransacked this floor for books on 'modern' warfare, it's fascinating and frightening to read about the things in some worlds. Guns sound hideous.