What is the sentence in Hua Mulan's poem describing the hard life in the cold war on the battlefield?

The breath of the new moon is golden, and the cold light is iron.

At night, the sound of playing ball came from the cold in the north, and the cold moonlight shone on the soldiers' armor.

From: "Mulan Poetry/Mulan Ci" Yuefu Poetry Collection [Southern and Northern Dynasties]

Formerly known as: Wan Li goes to Rongji, and the mountains are flying. The breath of the new moon is golden, and the cold light is iron. The general died in battle, and the strong man returned in ten years.

Not far away, Wan Li went to the battlefield and flew over the passes and peaks. At night, the sound of playing ball came from the cold in the north, and the cold moonlight shone on the soldiers' armor. Soldiers fought many wars, some died for their country, some fought for many years and returned home in triumph.

The extended information "Mulan Poetry" is a long narrative poem, which tells the story of a girl named Mulan who disguised as a man, joined the army for her father, made meritorious deeds on the battlefield, and didn't want to be an official after returning to Korea, but just wanted to go home and reunite. She warmly praised the woman's brave and kind qualities, her enthusiasm for defending the country and her fearless spirit.

The excerpts outline Mulan's ten-year campaign life, and the whole poem conceives the legendary story of Mulan with "Mulan is a girl", which is full of romance; The details are cleverly arranged. Although it is about war, it is more about life scenes and children's modality, full of life breath. Describing the characters' modality, using questions and answers, parallelism, antithesis, intertextuality and other methods to describe the characters' psychology is vivid and meticulous, which makes the works have strong artistic appeal.