The poet who called Li Bai the "immortal" was He Zhizhang.
When Li Bai first arrived in the capital, he stayed in a hotel. The famous poet He Zhizhang had heard of Li Bai for a long time and was the first to visit him. When he saw Li Bai's white robe covering his body, his sleeves were handsome, his mouth He spit out pearls and behaved freely. He suspected that he had met an immortal and said: "You are definitely not a human being in this world. He must be an elf from Taibai Venus." He immediately gave Li Bai a nickname of "Exiled Immortal". The two met so late that they immediately set down a banquet and exchanged glasses. They were both very drunk, which became a good story for future generations. ?
Extended information:
He Zhizhang (ca. 659-ca. 744), also known as Jizhen, in his later years called himself "Siming Kuangke" and "Secretary Waijian". A native of Yongxing Prefecture (now Xiaoshan District, Hangzhou, Zhejiang Province). Poet and calligrapher of Tang Dynasty.
When he was young, he was famous for his poetry. In the first year of Zhengsheng (695), Wu Zetian became the number one scholar in Yiwei, and was awarded Doctorate of the Four Gates of Guozi and moved to Doctorate of Taichang. During the Kaiyuan period, Zhang Shuo served as the book editor of Lizheng Palace. He invited Zhizhang to join the academy and co-authored the "Liu Dian" and "Wen Zhuan". Later, he succeeded Taichang Shaoqing and was promoted to Minister of Rites. He was also granted the title of Bachelor of Jixian Academy and was granted the title of Minister of Works. Russia moved to secretary-supervisor. He was open-minded and uninhibited, a good drinker, and was known as a "clear talker", especially in his later years.