Abstract: There are a lot of poems for singing natural bridges in Dali, China. For people in Midu county, natural bridges would always be associated to “Stone Rainbow Accompanied by the Moon”; for people in Longguan county(current Xiaguan county), those bridges bring them to the picture of “Natural Bridges in Falling Snow”. However, there is also the landscape of “Stone Rainbow alongside the Moon”, one of “Top Ten Landscapes in Yeyu” in Longguan. As a result, people often get confused between “Stone Rainbow Accompanied by the Moon” in Midu and “Stone Rainbow alongside the Moon”in Longguan. Natural bridges were found and given rich cultural implication by men of letters, among whom the Khitan poet Shu Lvjie in Yuan Dynasty firstly made the remark “Unfading Plum”. The natural landscape of “Natural Bridges in Falling Snow” gets integrated with the Buddhist legends and the abstract literary image “Unfading Plum”, forming a unity of the real scenery and the imaginary one, a unique literary landscape. Since Ming and Qing dynasties, literati have never stopped writing poems of chanting natural bridges' landscape “Unfading Plum”, but people do have some misunderstanding of “Unfading Plum”, which arouses scholars' interest to research. Consequently, the connotation of “Unfading Plum” is enriched and deepened.

Key words: Yunnan poems, natural bridges, “Unfading Plum”, literary geography, literary landscape