Now the social competition is so fierce, I think we will learn some more knowledge, or better, just a few days ago, I found that there has been no friends and our party, I was very puzzled, I went to see him, that I knew he was the original home recently he has been studying AWS, he said he recently on this AWS very interested, but he felt it, the AWS is also very broad, if you learn some words or can be used, to hear him say this, I think what he said is reasonable, and I he learn from the knowledge of AWS, I think after a period of study, we can learn a lot of knowledge.