Excuse me, what's the name of the BGM in this video? It's a very bluesy Cantonese song.

I listened to it, it should be "Blue Moon", Jacky Cheung sung it, and Hacken Lee also sung it! Attached are the lyrics, I hope they are useful to you!

.Blue Moon

Music: Yu Zhihao Two words: Xiang Xuehuai

The bright moon night is like drunkenness, adding a bit of sadness to the night sky

Holding you in my arms under the bright moon is a reluctant beauty

The sudden panic fascinates me

May you be warm for a lifetime

From darkness into the cool morning

Kissing a passionate lover on the street corner

Emptyness and heartbreak float like floating clouds

Hide the street lights

The breeze is blowing through the swaying long skirt

Time has taken away the time of obsession

Both hugged tightly and were completely close

People under the bright moon are drunk and don’t know that time has passed

Blue The moon has gone but I still cling to tonight’s vows

I hope the sad moments in the past will never be mentioned again

Make this life more beautiful

From darkness into the cool morning

Kissing a passionate lover on the street corner

Emptyness and heartbreak float like floating clouds

Hide the street lights

The breeze is drifting gently Long skirt

Time has taken away the time of obsession

Both hugged each other and were completely close

From darkness into the cool morning

On the street corner Kissing a passionate lover

Emptyness and heartbreak float like floating clouds

Hide the street lights

The breeze is blowing through the swaying long skirt

Time has taken away the time of obsession

Both hugged tightly and were completely close

People under the bright moon are drunk and don’t know how time has passed

The blue moon has left and is still attached to today Late vow