Aerial photo taken on May 19, 2019 shows the early summer scenery of the Yang'ai tea garden in Gui'an New District of southwest China's Guizhou Province. (Xinhua/Ou Dongqu)

　　Aerial photo taken on May 19, 2019 shows the early summer scenery of the Yang'ai tea garden in Gui'an New District of southwest China's Guizhou Province. (Xinhua/Ou Dongqu)

　　Aerial photo taken on May 19, 2019 shows the early summer scenery of the Yang'ai tea garden in Gui'an New District of southwest China's Guizhou Province. (Xinhua/Ou Dongqu)

　　Aerial photo taken on May 19, 2019 shows the early summer scenery of the Yang'ai tea garden in Gui'an New District of southwest China's Guizhou Province. (Xinhua/Ou Dongqu)

　　Aerial photo taken on May 19, 2019 shows the early summer scenery of the Yang'ai tea garden in Gui'an New District of southwest China's Guizhou Province. (Xinhua/Ou Dongqu)