What is the previous sentence of "The Yellow Crane Tower is vacant" here?

The last sentence of the empty Yellow Crane Tower here is "People in the past have gone on the Yellow Crane."

"In the past, people rode on the Yellow Crane, and the Yellow Crane Tower is vacant here." comes from Cui Hao's "Yellow Crane Tower". The full poem is as follows:

In the past, people rode on the Yellow Crane. , the Yellow Crane Tower is vacant here.

The yellow crane will never return, and the white clouds will remain empty for thousands of years.

Qingchuan is surrounded by Hanyang trees and luxuriant grasses in Parrot Island.

Where is Rimu Xiangguan? The smoke on the Yanbo River makes people sad.

Translation: The legendary immortal has already left on the Yellow Crane, leaving only the empty Yellow Crane Tower. The Yellow Crane never came back. Only the long white clouds have been floating in the sky for thousands of years, unchanged because of the Yellow Crane's departure. On a clear day, across the river, the trees of Hanyang City are clearly visible, and Parrot Island is also covered with lush grass.

It's dusk, where is my hometown? The vast misty river arouses infinite sorrow!