Looking for a modern poem? A small island? I can’t remember the author clearly, but it seems to be Yu Guangzhong. The last line of the poem is “I will spend my whole life lighting a lamp for you…”

Correct: The little island Zheng Chouyu

I miss the little island where you live

It belongs to the tropics and the green country

...

If I go, I will take my flute and stick with me

At that time I was a shepherd boy and you were a lamb

Otherwise, if I go, I will turn into a firefly

I will light a lamp for you with my whole life