What role does exaggeration play in Li Bai's poems? Thank you (mainly in terms of ideology and art)

Associated with verve and rich imagination, there are many magnificent images in Li Bai's poems, including mountains and rivers, the sun and the moon. He seems to be particularly attracted by huge and spectacular things. Dapeng, giant fish, long whales, rivers, seas and snow-capped mountains are all objects he likes to chant. Li Bai described them in an unusually broad spatial background, forming a magnificent poetic image. Like, "I climbed to the top. I have a panoramic view of the world "In" Lu Shan Ge Yu Shi Lu Xuzhou ",the rivers are boundless and there is no return. Huang Yun and Wan Li moved the wind, and Jiuliu whirled around Bai Xuefeng. "The magnificent combination of images gives people a sense of sublimity. Another example is seeing a friend off at Jingmen Ferry: "This is the end of the mountain, the beginning of the plain, and the river winds through the wilderness. The moon rises like a mirror, and the sea clouds twinkle like palaces. "The image is also extremely broad and spectacular.