This is a poem written by Nobel Prize in Literature winner and Chilean poet Nie Luda with healthy style, strong feelings and strange imagination. The smile admired in the poem is a kind of god, a kind of strength, something more indispensable than air and food, and more precious than a hero's life, that is, love for the motherland and one's own nation.
At the beginning of the poem, a euphemistic and lingering feeling develops in the plain narration, and the echo of the voice causes a sad beauty. "Bread" and "air" are undoubtedly the first needs of human existence. However, the author regards them as something that can be deprived for "your smile", thus highlighting the irreplaceable importance of this "smile" to poets.
"Echoing everywhere" refers to a situation in which people all over the country are struggling for the future of the motherland.