Obviously the man suffered from a severe psychiatric illness. I hope this trady can raise the awareness of mental illness in our Chinese community: if you notice someone with bizarre behaviors, please bring him/her for a medical assessment, such as a psychiatric clinic or even an emergency department; if you feel he/she is out of control, you probably need to call 911 on him/her.
2。叫个伙伴，给他一支彩笔
3。伙伴站在21英尺外，你们俩面对面
4。伙伴在任何时候向你冲，你要在他能够在你衣服上划彩条之前击中他。
做完了试验，知道用枪防御是怎么回事，再来说三道四。