What allusion does Vae's "flick of a finger" come from?

Allusions in Su Wu's Pasturing Sheep.

Story: Before Su Wu went to the Huns, he left his wife a poem "Keep a Wife", in which he wrote "Get married and love each other" and said "Come back when you are alive and be a Sauvignon Blanc when you die". This parting is extremely touching. However, Su Wanwan never imagined that it had been 19 years since she left. In this 19 years, the husband and wife were separated in thought and did not hate each other. This is the scene and feeling created by "a flick of a finger".

With a flick of a finger (cover)-Shi Shuo

Word: Vae

Song: Vae

Rain is everywhere, and frost leaves are everywhere.

Clouds cover autumn geese and moonlight for ten years.

I opened the window and my hands rustled with memories.

The pillow is cold and the candle is broken, which makes people feel melancholy.

Leaving sadness instead of hatred is an ulcer of the soul.

You are wandering with the moon and the stars flying.

You push open the window lamp and scatter it on the river with the smoke.

The dew is cold, and the old boat shakes people's worries

You'll be far away in the blink of an eye.

The sea becomes a wilderness, and the truth never dies.

With a flick of a finger, the world of mortals is far away.

Green silk stained with snow, making clouds all the way.

Leaving sadness instead of hatred is an ulcer of the soul.

You are wandering with the moon and the stars flying.

You push open the window lamp and scatter it on the river with the smoke.

The dew is cold, and the old boat shakes people's worries

You'll be far away in the blink of an eye.

The sea becomes a wilderness, and the truth never dies.

With a flick of a finger, the world of mortals is far away.

Green silk stained with snow, making clouds all the way.

You'll be far away in the blink of an eye.

The sea becomes a wilderness, and the truth never dies.

With a flick of a finger, the world of mortals is far away.

Green silk stained with snow, making clouds all the way.