It's like the fentanyl of attention, the purest distillation of the state of mind we entered into when we mindlessly flipped through channels on TV.
If you use it enough, your brain starts to find it _very_ irritating to focus on anything for more than 5-10 seconds or so. I really can't describe how powerful of an effect it is. I don't know if the Chinese government intended to use it as some sort of covert weapon, but if they did then they're geniuses. It literally makes you stupid.