What are the idioms that describe how quickly things change?

Time flies: Time flies like an arrow.

Summer has passed and winter has come. Generally refers to the passage of time.

Running water is ruthless: running water is gone forever, and there is no affection. Metaphor time goes by, no intention to stay.

Blink of an eye: like a fine horse flying through a tiny gap. Describe how time flies.

The big dipper turns and the constellation moves. This means the change of time series and the passage of time.

Fleeting: It disappears after a little relaxation. It is easy to lose time and opportunity.

You may delay, but time will not. It means hurry up.

Years and months are like running water: describe the passage of time like running water.

Between fingers: metaphor time is very short.

Time flies: describe time gone forever.

The deceased is like this: time is like a river, and day and night pass by.