In the big world. The duration of the song is 3 minutes and 23 seconds.
The Chinese lyrics are as follows (for reference only):
I am a big girl.
Living in a big world
It's no big deal to leave me
But I do think
I will miss you very much, I will miss you very much.
I can see the first fallen leaf.
It is so yellow, so beautiful.
It's too cold outside.
Just like my inner feelings.
I am a big girl.
In a big world
It's no big deal to leave me
But I do think
I will miss you very much, I will miss you very much.
It's raining outside now.
My eyes are crying. Why did all this happen?
Why did all this end?
I am a big girl.
In a big world
It's no big deal to leave me
But I do think
I will miss you very much, I will miss you very much.
I am lying in your arms.
As warm as a stove.
But when I woke up and opened my eyes,
You left.
I am a big girl.
Living in a big world
It's no big deal to leave me
But I do think
I will miss you very much, I will miss you very much.
I am an important girl.
In a big world
It's no big deal to leave me
But I do think
I will miss you very much. I will miss you very much.