Please briefly describe Yuan Sijia's painting style.

A: "Yuan Sijia" refers to Huang, Zhenwu, Wang Meng and Ni Zan. They are all literati in Jiangsu and Zhejiang provinces, who are good at ink and wash landscapes and bamboo and stone works, emphasizing the organic combination of poetry, calligraphy and printing. Their works belong to typical literati paintings. Although their painting styles have their own characteristics, they all learn from Dong Yuan and Ju Ran and are influenced by Zhao Mengfu. They attach importance to pen and ink, pay attention to interest, and combine calligraphy and poetry. They are the mainstream of landscape painting in Yuan Dynasty, and have a great influence on painting in Ming and Qing Dynasties, especially on "Nanzong" painting school. They attach great importance to ink painting in form, or a little light color and light crimson, forming different faces, but their emotions are mostly sad, indifferent and lonely, reflecting the helplessness in the turmoil of the times. Huang's works mainly describe the natural scenery in the south of the Yangtze River in Yushan and Fuchun, including Fuchun. Zhenwu is good at painting landscapes, plum blossoms and bamboo stones, and his works include The Fisherman's Map and Luhua Hanyan. Wang Meng is good at painting landscapes, as well as poems and calligraphy works. The representative work is "the seclusion map of the Qing dynasty". Ni Zan is good at mountains and rivers, bamboo stones, mostly ink and wash. His representative works include "Qiu Ji Map of Fishing Village" and "Yushan Forest Valley Map".