Hi guys, Welcome to the Advanced Video Search Engine, and you are watching 70秒看70年：新中国发展巨变之科技. That video is uploaded by 中国新闻社 at 2019-09-23T19:58:15-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [sJp1ZeJrupE]