Beijing - huge white truck - blue flashers

https://map.baidu.com/poi/%E5%8C%97%E6%96%B0%E6%A1%A5%E6%B6%88%E9%98%B2%E5%B1%80/@12960300,4830220,21z,87t,97.74h#panoid=09002200121902211526448498O&panotype=street&heading=342.41&pitch=-0.04&l=21&tn=B_NORMAL_MAP&sc=0&newmap=1&shareurl=1&pid=09002200121902211526448498O

maybe at a hospital

are those generators behind the truck?