The Three Musts refer to Li Bai's poems and songs, Zhang Xu's cursive script and Pei Min's sword dance. The three wonders of the Tang Dynasty are: Li Bai's poems, Pei Min's sword dance and Zhang Xu's cursive script, which were sealed as the whole country by Tang Wenzong. Li Bai's poems and songs are called "violet laity" and "fallen fairy" with the word Taibai, and are known as "poetry fairy" and "poetry hero". Pei Minzhi's sword dance was born between Pei Minzhi and Tang Kaiyuan, and it was also one of the "three wonders" in the Tang Dynasty. A person's swordsmanship can be compared with Li Bai's poems and songs and Zhang Xu's Wild Grass, which shows that his skill is very superb. Zhang Xu cursive script, Zhang Xu, Zi, Zi, Wu Jun (Suzhou, Jiangsu) people. Zhang Xu's cursive script and Zhang Xu's cursive script are ever-changing, strange and changeable. In Li Bai's poem, he said, "What the Chu people did was strange, and their hearts were hidden in the clouds." All three Wu Junbo looked around, and heroes from all over the world struggled to follow.