Poems of Meng Jiao
Written below the Zhongnan mountains
You can see the plains roll away from here
Where one comes to know different blessings.
Mountain villages are free of oppressive shadows.
Their rivers are a constant rain for their fields.
Every house leads up to blue peaks.
Every gate enfolds its fragrant smoke.
They call to mind those who shed their bones
And fly off through the cassia trees as immortals.
Just a few notes. The plains roll away west and north from the mountains, towards the lands of the Uighur, the Mongol, the Tibetans. This western region is made up of great military districts with commanders who sometimes vie for the throne. Line 3 has the sense of the mountains being free of the unfair oppression which overshadows the "civilized" villages, which are more easily governed and taxed. Line 8 is literally "change into flying cassia immortals." So it's possible that either "flying cassia (or laurel) (飞桂) or "cassia immortal" (桂仙) is a lost bigram with its own meaning, flying- or immortal-wise.