Hi guys, Welcome to the Advanced Video Search Engine, and you are watching 미래 도시를 향한 경고...저출산 사회에 경종 / YTN. That video is uploaded by YTN at 2024-01-20T13:32:59-08:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [yzT18K_wnNY]