This poem comes from Mao Zedong's Seven Laws Long March.
The specific original text is as follows:
The red army is not afraid of the expedition, and Qianshan is just idle. ?
Wuling makes waves, and Wumeng takes mud pills. ?
Jinsha River is warm in the clouds and cliffs, and Dadu Bridge is cold with the cross rail. ?
I am glad to see that Minshan Mountain is covered with snow and stretches for miles. Our soldiers crossed it and showed a bright smile.
This is a seven-rhythm poem, which mainly describes the difficulties and obstacles on the Long March, and expresses Mao Zedong's fighting pride full of joy, as well as his spirit of courageously marching forward despite difficulties.