2, fight, if you are car-scrapping, you have to hit him. Actually, I didn't regret fighting when I was studying. Besides, fighting among children won't kill anyone.
3. Call someone when he is resting and return it.
4. Pick up his girlfriend.
Find a female friend to seduce him and tell his girlfriend.
6. You can plug your ears with cotton (soft tissue). I use this method when I live with a roommate who snores loudly.
7. I think it is still reliable. Make friends with him first. Good relationship, say anything.