@Dr-Flay Thanks for your attention to this work.
The following lyrics are from GPT's translation, and I've briefly corrected the meaning.
[Verse]
Birds fly, crossing the blue sky
Fluttering, they disappear
You're laughing, ceaselessly
Everything is laughing, just like a dream
[Verse 2]
In the dream, there are mountains and water, birds flying all over the sky
One and another, flashing through the mind
Oh? Why are you laughing?
Dusk clouds break, and birds fly into the sunset
[Chorus]
No pain, no fear,
Its wings, born of your hopes
Oh oh ooh ooh, the bird flies,
Crossing the blue sky, fluttering, they are gone