These two sentences are poems praising the Yellow Emperor. The question is a suburban song used for sacrifice, which is the rhythm of blowing the Yellow Emperor to the sky.
Yujin refers to raw gold that has just been mined without tempering. It is tempered by fire. Gongyin is the first of the five tones, and its sound is extremely long, deep, and turbid.
In the five elements, metal overcomes fire, fire generates earth, and earth generates gold. The Yellow Emperor was a native of earth, so his poems all revolved around gold and fire.
In the first sentence, untempered gold is the body, undergoing the baptism of fire, and grand music sounds to welcome the arrival of God.
The second sentence, after being tempered by fire, it will naturally become high and bright, and the high-quality gold refined out of it can overcome fire.