Li Bai was a famous poet in the Tang Dynasty. His life had experienced three periods: youth, prime, and old age. 1 Youth: Li Bai was born in the Zhenguan period of the Tang Dynasty. He was a son of a poor family. When he was young, he obtained the opportunity to enter the imperial court by taking the imperial examination, but because of his outstanding talent, he failed many times. Later, he left his hometown and traveled to many places. He made many friends and became a versatile person. 2. In his prime, Li Bai became an official of the Tang Dynasty in his later years. He spent a long time in office. During this period, Li Bai's writing style began to change. He began to pay more attention to expressing his personal feelings and wrote many passionate and bold poems. His representative works include "Will Enter Wine,""Lushan Ballad," etc. 3. In his later years, Li Bai left the court and began his wandering life. He traveled to many places and met many talented poets, becoming an important figure in the history of Tang poetry. During this period, Li Bai's poetry style became more diverse. He began to write many representative poems about nature, life, history, etc., such as "Night Moored by Niu Zhu Recalling the Ancient Times" and "Going to Wuxing to Climb Leyou Plain". Li Bai's poems were full of passion and unconstrained, and he became an outstanding representative in the history of Tang poetry.