The video could not be loaded, either because the server or network failed or because the format is not supported: https://zhaoban.bbc.edu.cn/_upload/article/videos/a6/b9/8d737431468ca1e34a9f1c8c251c/c2ba89a7-5e52-425b-b4f6-fd778dfb36fe.mp4
![](https://zhaoban.bbc.edu.cn/_js/_portletPlugs/jwplayer/img/images/preview.jpg)
![](https://i7.youzy.cn/umedia/photos/1015/scout/240621_88de518165f54aaf9cec51f46c12b62c_9f22511efe3c20bc4305bda0651c1a64.jpg)
00:00
00:00