This topic examines knowledge points: ancient science and technology and literature and art in China. As far as I know, China's calligraphy art is a unique art with the literal meaning of Chinese characters in China as its content and the writing in a certain font as its form. Starting from the bronze inscriptions of Shang Dynasty in Oracle Bone Inscriptions and China, through the development of seal script, official script, cursive script, regular script and running script, five main fonts of China's calligraphy were finally formed. Xiao Zhuan was founded in the Qin Dynasty; Lishu began in Qin Dynasty and matured in Han and Wei Dynasties. Regular script, also known as real script and official script, was formed at the end of Han Dynasty. Running script is a font between regular script and cursive script, which is popular in Jin Dynasty. Cursive script was formed in the early Han Dynasty. The three works in this topic are illustrations of teaching materials. (1) "Mourning" is the work of Wang Xizhi. Item 2 belongs to bronze inscriptions; The third item is Xiao Zhuan, which was founded in the Qin Dynasty. ④ Biography of Ji 'an is a regular script written by Zhao Mengfu in Yuan Dynasty. So choose B.