After the Sung Dynasty, window designs became more complex and varied, reaching a climax in the Ming (1368 - 1643) and Ching (1644 - 1911). The windows found in the gardens of Soochow are most representative of this trend. Architectural historian, Li Chien-lang, feels there are two main reasons for this development.
宋朝之後，窗子的形狀日趨繁複；到了明清之際，中國窗的藝術發展到達巔峰，其中以蘇州庭園裡多彩多姿的窗式，最為豐富。