The song "A Moonlit Night in Kuailang" and "Shaking Hanchuan" is the author's positive description of the smelting workers who are working hard. Kuailang's original intention is to blush. Li Bai creatively developed it and created a brand-new poetic word "Kuailang" to express his sincere admiration for the hard-working people in front of him.
Explain the meaning:
On a bright night, the fire reflected the faces of boys. They sang loudly while working. The singing was loud and clear, which shocked the cold mountains and rivers.
I hope it helps you. Thank you O(∩_∩)O~