Photo taken on April 25, 2020 shows flowers during the Shanghai International Flower Show 2020 at Shanghai Botanical Garden in east China's Shanghai. The one-month show kicked off in Shanghai on Saturday. (Xinhua/Zhang Jiansong)

Photo taken on April 25, 2020 shows flowers during the Shanghai International Flower Show 2020 at Shanghai Botanical Garden in east China's Shanghai. The one-month show kicked off in Shanghai on Saturday. (Xinhua/Zhang Jiansong)

Photo taken on April 25, 2020 shows flowers during the Shanghai International Flower Show 2020 at Shanghai Botanical Garden in east China's Shanghai. The one-month show kicked off in Shanghai on Saturday. (Xinhua/Zhang Jiansong)

Photo taken on April 25, 2020 shows flowers during the Shanghai International Flower Show 2020 at Shanghai Botanical Garden in east China's Shanghai. The one-month show kicked off in Shanghai on Saturday. (Xinhua/Zhang Jiansong)

Photo taken on April 25, 2020 shows flowers during the Shanghai International Flower Show 2020 at Shanghai Botanical Garden in east China's Shanghai. The one-month show kicked off in Shanghai on Saturday. (Xinhua/Zhang Jiansong)

Photo taken on April 25, 2020 shows flowers during the Shanghai International Flower Show 2020 at Shanghai Botanical Garden in east China's Shanghai. The one-month show kicked off in Shanghai on Saturday. (Xinhua/Zhang Jiansong)