Which four verbs are used well in the ancient poem "The Shepherd Boy"? What are the advantages?

This poem was written by Du Fu when he lived in Zizhou. Du Fu was 52 years old this year, which was the fifth year that he drifted out of Jianmen because of An Shi Rebellion. Du Fu has been looking forward to quelling the rebellion and tracing its roots. Suddenly, when he heard that the loyalist had recovered Jibei, he burst into tears of joy and could not help himself. The author expresses his surprise mood incisively and vividly with four continuous actions: sudden transmission, first smell, but watching and rambling. In these four dynamic descriptions, the author imagines that he has passed through Basha, Martial Arts, Xiangyang and Luoyang, and returned to his dream hometown. Later generations said: "This poem is extremely happy, full of twists and turns, and the simpler it is, the simpler it is." This poem is Lao Du's "the first quick poem in life", and so on, which are all very accurate comments.