More than half of us now live in cities. Crowded, chaotic and bursting with life - these are places under pressure. In this brand new series, Dan Snow, Anita Rani and Ade Adepitan go behind the scenes to reveal the hien systems and armies of people running some of the greatest cities on earth. Find out how Mexico City kps its inhabitants safe from earthquakes, and mt local people who offer an inside look at life in metropolises like Delhi and Hong Kong. Meanwhile, Moscow's incredible architecture shows that the world's busiest cities also have some of the richest histories.
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首页和播放页都有继续观看方便追剧，用户收藏也可以每次直接观看，这次主要更新的是播放页右下角里面的去片头片尾，主要线路去广告插播，弹幕恢复，还有方便追剧》
右上角有更改主字体色彩和黑白切换。