Sima Xiangru, Yang Xiong, Ban Gu and Zhang Heng are the four masters of Han Fu.
Four masters of Tang poetry: Li Bai, Du Fu, Bai Juyi and Yuan Zhen.
Four great poets in Song Dynasty: Su Shi, Xin Qiji, Liu Yong and Li Qingzhao (Zhou Bangyan is also acceptable).
The four masters of Yuan Opera: Guan Hanqing, Ma Zhiyuan, Bai Pu and Zheng Guangzu.
Luo Guanzhong, Shi Naian, Wu Cheng'en and Cao Xueqin were four great novelists in Ming and Qing Dynasties.
Four famous contemporary prose writers: Yang Shuo, Wei Wei, Qin Mu and Boyu Liu (Wu Boxiao is also good).
Four outstanding figures in the early Tang Dynasty: Yang Jiong, Lu, Luo.
Four great calligraphers in the early Tang Dynasty: Ou Yangxun, Chu Suiliang, Yu Shinan and Xue Ji.
Four friends in Tang Dynasty: Du, Cui Rong, Li Qiao and Su Weidao.
Four masters of regular script: Yan Zhenqing in Tang Dynasty, Liu Gongquan in Yuan Dynasty, Ou Yangxun and Zhao Meng.