Don't buy electronic products, mobile phones, computers, tablets and learning machines. It's really a lie, novels, videos, games. It's too addictive I was addicted to novels in high school. At that time, I was reading novels except sleeping for seven hours, and I didn't listen to them at all in class. I watch my mobile phone at home learning machine, and I can't control myself completely. Indulge in DOTA on weekends and even play before the college entrance examination.