What are Li Bai's poems about scenery, which contain endless meanings?

What are Li Bai's poems about scenery, which contain endless meanings?

Li Bai's two sentences, "Lonely sails sail far across the sky, only the Yangtze River flows in the sky", express feelings with scenery and contain endless meanings.

"Lonely sails sail in the blue sky, and only the Yangtze River flows in the sky." On the surface, these two poems are all about scenery, but in fact they have distinct poet images. "Lonely Sail" does not mean that there is only one sailboat on the vast Yangtze River, but that all the poet's attention and feelings are focused on the sailboat that his friends are riding. The poet saw off at the edge of the Yellow Crane Tower, watching his friend's boat hang sail, drifting away, getting smaller and smaller, getting blurred, leaving only a little shadow, and finally disappearing at the junction of water and sky, while the poet still stood for a long time, watching the river flow to the sky, as if entrusting his affection to the river, accompanying the accompanying boat and sending his friend to his destination. These two poems express the profound friendship between Li Bai and his friends, but the word "friendship" cannot be found in the poems. The poet skillfully pinned his deep affection for parting on the dynamic description of natural scenery, and completely integrated his feelings with the scenery, which really made him memorable.

From Li Bai's "Yellow Crane Tower Farewell to Meng Haoran on the way to Yangzhou" in the Tang Dynasty.

Old friends frequently waved to me, bid farewell to the Yellow Crane Tower, and traveled to Yangzhou in this beautiful spring filled with catkins and flowers.

My friend's sail shadow faded away and disappeared at the end of the blue sky, only seeing the first line of the Yangtze River and heading for the distant horizon. ? (Pass only: Only)