Aerial photo taken on April 19, 2019 shows the scenery of the Retreat & Reflection Garden in Suzhou, east China's Jiangsu Province. Suzhou is home to dozens of famous classical gardens that have inventive and exquisite design and oriental aesthetics. Nowadays more than 60 of them are still in existence, among which the Humble Administrator's Garden, Lingering Garden and the Lion Grove Garden are on the UNESCO's World Heritage List. (Xinhua/Li Xiang)