I have advanced a, let colleagues on a day I sit up and take notice, and there have been some knowledge about the NVR of our company inside the file, we do not know what is the NVR, so there are discussed, and then I hear them, look at the past, later I know what they say is the NVR, I will tell them some knowledge about NVR, and I also tell them how to use the NVR, gave them some simple demonstration, then listen to me, my colleagues on this NVR have to understand, but do not stop praise me, I can say is also Joseph about it, anyway, I think I usually learn some more knowledge is really good, I want to be I didn’t learn some NVR knowledge, I do not know what is the NVR So.