If they hadn’t mentioned the defense threat, I think I’d never know about the defense threat, because I don’t know about it. These days our company what is really very little, so we are free to chat, colleagues are in there, but I heard they talk about the most is the threat defense, but at the beginning, I thought they were just about threat defense, but later I found that they recently also in learning about threat defense knowledge, so I think, I can’t fall behind them, so I decided to learn some knowledge about threat defense, then, after they said I also know what is.