![](http://www.ecns.cn/hd/2020/04/24/a434f415e4634fd7bea40a952717f577.jpg)
A grower prepares lily of the valley for May 1 in Essonne, France on April 23, 2020. (Photo by Jack Chan/Xinhua)
![](http://www.ecns.cn/hd/2020/04/24/298363ed5a984f5ba66c3159e319e67a.jpg)
A grower prepares lily of the valley for May 1 in Essonne, France on April 23, 2020. (Photo by Jack Chan/Xinhua)
![](http://www.ecns.cn/hd/2020/04/24/bfbb2bc064e54699b760d5914f93602b.jpg)
A grower prepares lily of the valley for May 1 in Essonne, France on April 23, 2020. (Photo by Jack Chan/Xinhua)
![](http://www.ecns.cn/hd/2020/04/24/1a128c34daab45e19545670077927174.jpg)
Photo taken on April 23, 2020 shows lily of the valley prepared for May 1 in Essonne, France. (Photo by Jack Chan/Xinhua)
![](http://www.ecns.cn/hd/2020/04/24/c470da0fd41743799924786587b84e5f.jpg)
Photo taken on April 23, 2020 shows lily of the valley prepared for May 1 in Essonne, France. (Photo by Jack Chan/Xinhua)