Hi guys, Welcome to the Advanced Video Search Engine, and you are watching 普通话学习教程 1:怎样轻松说好普通话 how to learn Mandarin. That video is uploaded by 李宝库 at 2018-09-24T20:32:04-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [i5oDvZjZ6Oc]