The source of this sentence: lightning is as fast as ears.

Sudden thunder has no time to cover your ears-it's as sudden as lightning.

Jon Ley Bjorn Naar

[Explanation] Thunder came too fast to cover your ears. The metaphor is fierce, which makes people unprepared.

[Source] "Liu Tao Chang Tao Military Intelligence": "Thunder is not as fast as ears, and lightning is not as fast as eyes."

Therefore, it is entirely possible for me to give him a surprise attack and eat him in one bite. ★ Qu Bo Lin Yuan Erjiu

As fast as lightning, as fast as lightning.

It was Han Qiaosheng who let slip when explaining a game.

There is also a full version: as fast as lightning, jingling bells. ...

The full name is:

As fast as lightning, the bell will jingle and we can't row.