The Palace Museum in Beijing has shared a range of photos featuring its collection of leaf-shaped relics with netizens on micro blog Sina Weibo, in celebration of summer. The shapes of leaves were commonly used on objects in ancient times, which we can be seen in the list of relics below:

A leaf-shaped green glazed gilded writing-brush washer, from Qianlong period of the Qing Dynasty (1644-1911). [Photo/Official Weibo account of the Palace Museum]