![Aerial-drone-backward-moving-shot-over-roof-electromechanical-equipment-of-Hong-Kong-Children's-Hospital,-China-with-heavy-traffic-movement-in-the-background-at-sunset](https://videocdn.cdnpk.net/happy/content/video/premium/partners0384/thumbnails/BB_2ad95c17-a02e-4500-95f3-e03767641dbd_small.jpg)
Aerial drone backward moving shot over roof electromechanical equipment of Hong Kong Children's Hospital, China with heavy traffic movement in the background at sunset
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