Wangtian Gate Mountain is a poem in Wangtian Gate Mountain written by Li Bai, a poet of the Tang Dynasty. The whole poem is as follows: The gate of heaven cut off the Chu River and opened the clear water to flow eastward to this place. Green mountains on both sides of the river face each other, and a lone sail appears beside the sun. This poem mainly described the scenery of Tianmen Mountain and the poet's feelings when he looked at it from afar. Tianmen Mountain was a high mountain in the Yangtze River. In the poem, it was described as a broken river and a lonely sail flying from the sun. The poetic conception of the whole poem was profound and expressed the poet's lofty aspirations and praise for nature.