Changji Angdingkan

Allusion: Gully. The Yangtze River is a natural ravine, surrounded by dangers. In the past, the Yangtze River was described as dangerous and insurmountable.

The origin of the idiom: "Sun Fanchuan's Southern History": "Sui Shi helped the river, please guard against it. Fan said: "The Yangtze River is a natural barrier and has been in danger since ancient times. How can Lu army fly over it?' "

River of no return

Hello, hello.

Idiom allusion: The water of the Yangtze River flows eastward, and then it is borrowed as a epigraph name, which means that the past disappears and history develops forward.

The origin of the idiom: Shi's "Red Cliff Nostalgia": "A spring river is a romantic figure through the ages."

On both sides of the Yangtze River

dàJing nán béI

Idiom allusion: refers to the vast area near the middle and lower reaches of the Yangtze River.

Cave, at first glance, the farther world, except to see the sky, nothing.