Aerial photo taken on April 25, 2019 shows pupils picking tea leaves at Dingxin tea garden on the Baixiang Mountain in Chongqing, southwest China. Over 300 pupils of Banan District came to the tea garden to experience picking tea leaves, making tea and learning tea culture on Thursday. Banan District of Chongqing combines tea culture with tourism and education in recent years to promote tea industry. (Xinhua/Wang Quanchao)