What is the meaning of "Ri Bian Lai" in ancient poems?

Come from the side of the sun: refers to the lone boat sailing from the distance where the sky and water meet. Looking from a distance, it seems to come from the side of the sun.

Original text of the work

Edited

Looking at Tianmen Mountain⑴

Tianmen interrupts the opening of Chujiang River⑵, and the clear water flows eastwards and returns here⑶.

Li Bai's poem "Wang Tianmen Mountain" written in cursive script by Liu Yang

The green mountains on both sides of the strait face each other ⑷, and a solitary sail comes from the sun ⑸.

Annotated translation

Word and sentence annotations

A regular script stone rubbing "Looking at Tianmen Mountain" by Academician Zhao Xuanhuang

⑴Tianmen Mountain: located in On both sides of the Yangtze River in Anhui Province and Wuhu County, the one in the north of the Yangtze River is called Xiliang Mountain, and the one in the south of the Yangtze River is called Dongliang Mountain (also known as Bowang Mountain in ancient times). The two mountains face each other across the river, forming a natural portal, hence the name Tianmen. "Jiangnan Tongzhi" records: "The two mountains are shaped like Xiaoyan, facing each other from east to west, across the river, and facing each other like gates. Liangshan is commonly called Xiliangshan, and Bowang Mountain is called Dongliangshan. It is generally called Tianmen Mountain."

⑵ Interruption: The river separates the two mountains. Chujiang: the Yangtze River. Because the middle reaches of the Yangtze River belonged to the Chu State in ancient times, it was called Chujiang. Open: split, break.

⑶Here: It means that the east-flowing river turns north here. One is "Zhibei". Hui: whirlpool, turn around. It means that the direction of the river in this section has changed due to the steep terrain, and it has become more turbulent.

⑷The green mountains on both sides of the Taiwan Strait: refer to Dongliang Mountain and Xiliang Mountain respectively. Out: to stand out, to appear.

⑸Come from the sun: refers to the lone boat sailing from the distance where the sky and water meet. Looking from a distance, it seems to come from the sun.

Vernacular translation

The Yangtze River is like a giant ax splitting open the majestic Tianmen Peak, and the green water flows eastward without turning around.

The beautiful scenery of the confrontation between the green mountains on both sides of the Taiwan Strait is indistinguishable, and you can see a solitary boat coming from the horizon.