Cai Xiang

Cai Xiang (Chinese: 蔡襄; pinyin: Cài Xiāng; Wade–Giles: Ts'ai Hsiang) (1012–1067) was a Chinese calligrapher, politician, structural engineer, and poet. Along with Su Shi, Huang Tingjian and Mi Fu, Cai Xiang is typically regarded as one of the Four Great Masters of the Song dynasty.