Upper Crown, lower Guan Feng, lower Guanfeng blowing on Crown;
Cangshan snow, Erhai moon, Erhai moon shines on Cangshan snow.
Horizontal criticism is "romance", which is the origin of this idiom in legend.
"Romantic scenery" is the four most famous landscapes in Dali. Shangguan (with Xiaguan) in Dali is an open grassland with colorful flowers, which is called "Shangguan".
Flowers "; Shimonoseki is a mountain pass, and there is a cool breeze in Xulai, which is called "Shimonoseki Wind". The majestic Cangshan Mountain runs through Dali, and the top of the mountain is covered with snow, so it is called "Cangshan Snow". Erhai Lake has beautiful scenery. Every moonlit night, the water is as bright as the sky and the moonlight is like water, so it is called "Erhai Moon".
Literature refers to four things describing natural scenery, and later refers to poems describing their words, as well as things between men and women.