The Autumn Water at Hao and Liang (濠梁秋水图), created by the Southern Song Dynasty master Li Tang (李唐), is a profound work of narrative landscape painting. It depicts a famous philosophical moment from the Zhuangzi: the debate between the Daoist philosopher Zhuangzi and his friend Huizi on a bridge over the Hao River regarding the "joy of fish."

The painting centers on the dialogue: "How do you know the fish are happy?" This work is not merely a landscape but an intellectual portrait. Li Tang places the two scholars in a lush, autumnal setting, using nature to mirror the Daoist theme of spiritual freedom and harmony with the universe. The composition invites the viewer to look past the physical world and contemplate the subjectivity of joy.

As Li Tang transitioned from the Northern Song to the Southern Song, his style shifted from the "monumental" to the "intimate." Autumn Water at Hao and Liang showcases his mature "Axe-cut" strokes (Fu-pi-cun) used to render the jagged, crystalline rocks. The gnarled pine trees and the flowing river are depicted with a mix of vigorous lines and soft ink washes, creating a textured, three-dimensional environment that feels both rugged and poetic.

The painting utilizes a horizontal handscroll format (though often viewed in segments), guiding the viewer through a winding path of rocks and water. The atmospheric perspective is achieved through varying ink densities—darker, sharper strokes for the foreground elements like the bridge and scholars, and lighter, misty washes for the receding autumn hills. This creates a sense of infinite space typical of the Southern Song Imperial Academy style.

Li Tang’s ability to combine literati philosophy with academic technicality made this work a cornerstone of Chinese art history. It influenced the subsequent "Ma-Xia" school (Ma Yuan and Xia Gui) and remains one of the most celebrated depictions of Daoist thought. It serves as a visual testament to the cultural resilience of the Song people during their southern migration.