Hello guys, Welcome to Africa's Largest Video Search Engine, and you are watching [조선영상비전] 4차산업혁명, 도시는 진화하고 있다. and this video is uploaded by 조선영상비전 at 2022-01-03T17:52:57-08:00. We are just promoting this video only for entertainment and educational purpose only. I hop you like our Video Search Engine. [_8ewO3Ihsdw]