Aerial photo taken on April 7, 2020 shows azalea blossoms at the Dazhu mountain scenic spot in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)

Aerial photo taken on April 7, 2020 shows azalea blossoms at the Dazhu mountain scenic spot in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)

Aerial photo taken on April 7, 2020 shows azalea blossoms at the Dazhu mountain scenic spot in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)

Aerial photo taken on April 7, 2020 shows azalea blossoms at the Dazhu mountain scenic spot in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)

Aerial photo taken on April 7, 2020 shows azalea blossoms at the Dazhu mountain scenic spot in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)

Photo taken on April 7, 2020 shows azalea blossoms at the Dazhu mountain scenic spot in Qingdao, east China's Shandong Province. (Xinhua/Li Ziheng)