The first sentence "you go" can be a homonym of "Li", the second sentence "Yan" is a homonym of "Yan", and the third scene "Lie" is a homonym of "I".
The whole poem (in fact, it is not a poem, it is improvisation, and it feels like a sentence. It means it feels better to be apart from you for one day than for three years. How do I know that I pour out my anxiety and sadness in words? It's sad to look at your smile when you sleep, just waiting for dusk to watch the sunset alone. I am willing to keep this feeling all my life and love you forever.
I just wrote it casually. I hope it helps you. May your dream come true.