What are the seven-character quatrains in red patriotic poems?

Seven-character quatrains in red patriotic poems;

The Yellow River is getting farther and farther away, because it flows in the middle of the Yellow River, and Yumenguan is located on a lonely mountain.

Why use the elegy of willow to complain about the delay of spring, old Yumenguan, a spring breeze is not blowing!

Vernacular translation

Looking around, the Yellow River is drifting away, as if it were running in the middle of winding white clouds, on the high mountain of Wan Ren in the upper reaches of the Yellow River, an isolated city, Yumenguan, stands tall and isolated. Why do you want to use Qiangdi to play sad willow songs to complain that spring has not come? It turns out that the spring breeze around Yumenguan can't blow!

Overall appreciation

According to Xue Yongwei's Records of the Collection, during the Kaiyuan period, Wang Zhihuan, Gao Shi and Wang Changling went to the pavilion for drinking, and when the actors in Liyuan sang and feasted, they privately agreed to decide the topic of the poem according to the situation of the actors singing the poem.

Wang Changling's poem was sung twice, and Gao Shi also sang one, but Wang Zhihuan failed one after another. It's the turn of the most beautiful woman to sing, singing "The Yellow River is far above the white clouds". Wang Zhihuan is very proud. This is the famous story of "painting a wall and hanging a flag pavilion". It may not be true. However, it shows that Wang Zhihuan's "Liangzhou Ci" has become a famous piece widely sung at that time.