What does "Xiongguan Road is really like iron, and it is always spring with colorful purples and reds." What does it mean?

The meaning of this sentence:

Xiongguan refers to Loushan Pass, which also symbolizes the many difficulties and obstacles in the Long March. Mandao, don't say it.

姹: beautiful, Yan: beautiful, bright, describing the delicate and beautiful flowers, and also metaphorizing the prosperity and colorfulness of various things.

Source: The previous sentence comes from Chairman Mao’s poem. The original sentence is, The majestic pass and the road are really like iron, but now I take a leap from the beginning. It means, don't always say that this pass is like an iron barrel, but now I am going to jump over it, with a sense of grandeur and pride on it.

The last sentence, colorful, describes the romance of spring flowers.

"The road through Xiongguan is really like iron, but now we are crossing it from the beginning" comes from Mao Zedong's poem "Recalling Qin'e·Loushanguan". "Recalling Qin'e·Loushanguan" is a generous, tragic, majestic and majestic poem written by Mao Zedong in 1935. Through many years of observation of scenery accumulated during the war, he uses the scenery to express feelings, and the feelings have scenery. From inside to outside, it describes the tense and fierce scenes of the Red Army's iron-blooded Long March at Loushanguan, showing the author's calm magnanimity and broad mind in the face of defeats and difficulties.

"Recalling Qin'e·Loushanguan"

The west wind is strong, and the geese in the sky are calling the frosty morning moon.

In the frosty morning and under the moon, the sound of horse hooves breaks and the trumpet sounds.

The long road to Xiongguan is really like iron, but now we are crossing it from the beginning.

From the beginning, the mountains are like the sea, and the setting sun is like blood.

His translation: The biting west wind is blowing fiercely, the wild geese are singing frost, and the dawn moon is in the sky. The dawn moon is in the sky, the sound of horse hooves is sporadic and chaotic, and the sound of military bugles is low and low. Don't say that the mountains are as insurmountable as iron, but now let us regain our strength and move forward. Reinvigorate and move forward, the vast green mountains are like the sea, and the sunset is as red as blood.