Four aspects of China's calligraphy: truth, cursive script, official script and seal script.
Four skills of ancient literati: piano, chess, painting and calligraphy
Ancient Siku Quanshu: Classics, History, Zi, Ji.
Four ancient books: University, The Doctrine of the Mean, The Analects of Confucius and Mencius.
Literary works are divided into four categories: poetry, prose, novel and drama.
Four great calligraphers in the early Tang Dynasty: Ou Yangxun, Zhu Suiliang, Yu Shinan and Xue Ji.
Cai Xiang, Su Shi, Huang Tingjian and Mi Fei were the four great calligraphers in the Northern Song Dynasty.
Four great writers in Northern Song Dynasty: Ouyang Xiu, Wang Anshi, Su Shi and Huang Tingjian.
Huang, Zhenwu, Ni Zan and Wang Meng were four famous landscape painters in Yuan Dynasty.
The four masters of Yuan Opera: Guan Hanqing, Ma Zhiyuan, Zheng Guangzu and Bai Pu.
Four masters of regular script: Yan Zhenqing, Liu Gongquan, Ou Yangxun and Zhao Mengfu.
Four outstanding figures in the early Tang Dynasty: Yang Jiong, Lu, Luo.
Fan Chengda, Lu You, Yang Wanli and Long Mao are four great poets in the Song Dynasty.
Four bachelor's degrees in Sumen: Huang Tingjian, Qin Guan and Chao He.
Tang Bohu, Zhu Zhishan, Wen Zhiming and zhou wenbin, four talented people in the south of the Yangtze River in Ming Dynasty.
Four classic novels: Romance of the Three Kingdoms, Water Margin, The Journey to the West and A Dream of Red Mansions.
There are four legends in China: the legend of the Cowherd and the Weaver Girl, the legend of Meng Jiangnv looking for a husband, the legend of Zhu Yingtai and Liang Shanbo, the legend of the White Snake and Xu Xian.
Tang Xianzu's Four Dreams of Linchuan: Purple Hairpin Phoenix, Peony Pavilion, Conan and Handan.