It is difficult to imagine now the big data era, if there is no such NVR thing, so we now do a lot of things can not be realized, I think as long as I can do one thing, then I would have to do a good job, but I’m not sure I can do things, then I must stick to my friends do, their company is doing NVR business, he said, sometimes he will feel as if there is a lot of problems to solve, I said I don’t know what I can do to what extent, but I can do it, then what is the best thing that I friends say, actually you don’t know NVR or Never mind, we can tell you.