Wang Meng (1308–1385), one of the Four Masters of the Yuan Dynasty, is celebrated for his revolutionary approach to Shanshui (landscape) painting. His masterpiece, "Long Pines and Flying Waterfall" (Changsong Feipu), serves as a definitive example of his "Jiemi" (dense and tight) style, which stood in stark contrast to the sparse, airy landscapes of his contemporary Ni Zan.

In terms of compositional structure, the painting utilizes a monumental verticality. The viewer’s eye is led from the gnarled long pines in the foreground, which act as a visual anchor, up through towering precipices and hidden valleys. The "flying waterfall" descends from the upper reaches of the peaks, providing a rhythmic, kinetic energy that balances the imposing density of the rock formations. This vertical flow represents the cosmic breath or "Qi" moving through the natural world.

The technical brilliance of the work lies in Wang Meng’s signature "Niumao Cun" (Ox-hair strokes). These fine, wavy, and interwoven lines create a sense of organic vibration on the mountain surfaces, suggesting the presence of moss, light, and internal geological movement. He combined these with moist ink washes and "Fantou" (Alum-head) rock shapes at the summits to enhance the sense of volumetric weight and structural complexity.

Symbolically, the painting is a profound meditation on Literati reclusion. The long pines, symbols of moral resilience, longevity, and the scholar’s unyielding spirit, frame the composition. The waterfall symbolizes the cleansing of the mind and the continuous flow of wisdom. For the Yuan scholars living under Mongol rule, such landscapes were spiritual sanctuaries, offering a retreat from political turmoil into the purity of nature.

Today, "Long Pines and Flying Waterfall" is regarded as a technical masterclass in the history of Chinese ink wash painting. Its "dense" aesthetic and emotional intensity influenced generations of Ming and Qing artists, solidifying Wang Meng’s status as a visionary figure who transformed the landscape into a complex language of the soul.