Butterflies cannot fly over the sea. Where did it come from?

The phrase "Butterflies can't fly across the sea" comes from the song "Butterflies" written by Lin in Faye Wong album "Crazy Foreigners" released by 1999.

The original words of this sentence in the lyrics are as follows:

Lips hurt each other before they open.

I don't want to look forward to the date until it is confirmed.

The relationship is rotten before the phone is hung up.

I hope you are a butterfly and come and go in a hurry.

Give me a pair of hands to lean on.

Give me a pair of eyes to watch you leave.

Just like a butterfly can't fly over the sea, no one has the heart to blame it.