![](http://www.ecns.cn/hd/2020/09/22/1265fd4aad6e4a0696f6afc32bf51b86.jpg)
The photo taken on September 21, 2020 shows mountains blanketed in wildfire smoke in Montana, U.S.. (visual.people.cn)
![](http://www.ecns.cn/hd/2020/09/22/f207b06fc7904bf9b6849d3ac3e895bd.jpg)
The photo taken on September 21, 2020 shows mountains blanketed in wildfire smoke in Montana, U.S.. (visual.people.cn)
![](http://www.ecns.cn/hd/2020/09/22/df7e56624a8b4a288cd7af5aabb76719.jpg)
The photo taken on September 21, 2020 shows mountains blanketed in wildfire smoke in Montana, U.S.. (visual.people.cn)