Wang Meng (1308–1385), the grandson of Zhao Mengfu and one of the legendary Four Masters of the Yuan Dynasty, achieved a peak of mystical complexity in his work "Zifu Xianshan Tu" (The Immortal Mountains of the Purple Palace). This masterpiece represents a departure from literal topography into the spiritual realms of Daoist mythology, depicting a celestial residence for immortals hidden within a dense, surging landscape.

From a compositional perspective, the painting is a triumph of the "Jiemi" (dense and tight) style. Wang Meng fills the vertical scroll with overlapping peaks, twisting ravines, and meandering streams. Unlike the sparse elegance of his contemporaries, his vision is one of restless energy and geological turbulence, creating a visual labyrinth that leads the viewer’s eye through a three-dimensional mountain range toward the "Purple Palace" (Zifu) at the summit.

The technical brilliance of the work lies in the masterful application of "Niumao Cun" (Ox-hair strokes). These fine, wavy, and interwoven lines create a vibrant texture that suggests both the internal pulse of the earth and the lushness of celestial vegetation. He combined these strokes with "Jiedian" (peppercorn dots) and a delicate use of "Qianjiang" (Light Reddish-Brown) washes, which bathe the peaks in an otherworldly, nostalgic light.

The symbolic dimension of "Zifu Xianshan Tu" is deeply rooted in Daoist reclusion. The "Purple Palace" refers to the celestial home of the immortals (Xian), a sanctuary far removed from the political chaos of the late Yuan period. For the literati scholars of the 14th century, this painting was not merely a landscape but a sacred map for internal alchemy and a manifesto of spiritual independence.

Today, "Zifu Xianshan Tu" is regarded as one of the most technically challenging and conceptually profound works in Chinese art history. It serves as a bridge between the Tang-Song classical tradition and the expressive individualism of the Ming-Qing periods, solidifying Wang Meng’s reputation as the architect of the monumental dense style in Shanshui painting.