The end of the world is an idiom that describes a place far away, or a very far away. Emperor Xulingwu of the Southern Dynasty made a portrait in the Lingnan Chieftain Haoshu - Tianya Defiance, the corners of the earth are leisurely, the conspiracy and trickery are for no reason, but they are begging.

Song Zhang Shinan's "Traveling Eunuch Chronicle Volume VI" is now a distant eunuch and a distant service to Jia, all of whom are known as the ends of the world.
Now people know that the earth is an elliptical sphere, and the universe is infinitely large. But in ancient times, people believed that there was an end to the world, and the end was at the end of the world.
So where is the end of the world that the ancients referred to?
A common view is that Tianya Haijiao introduced in the chinese geographical knowledge of Sanya City in today's Hainan Province, that China does have a place of Tianya Haijiao, which is a beautiful bay near Maling at the southern tip of Hainan Island, which has now been set up as a tourist area at Tianya Haijiao.
Here is 26 kilometers away from Sanya in the east and 22 kilometers away from the former site of Yacheng Yuanya County in the west, and there are two rugged boulders in a strange stone, one chiseled into "Tianya" and the other carved "Cape".
The People's Pictorial also said that Yaxian was very closed to traffic in ancient times. When the Northern Song Dynasty writer Su Dongpo was exiled here, he once inscribed the words "Tianya" on a tall blue-gray boulder.
Some people also disagree, believing that these two characters were inscribed by the local Zhizhou Cheng Zhe during the Yongzheng period of the Qing Dynasty. Why did the ancients define this place as the end of the world? It has long been a difficult historical mystery.
In recent years, after many investigations, this historical mystery has been unveiled. During the Kangxi Dynasty of the Qing Dynasty, the first nationwide mapping activities were carried out. Located at the southern tip of Hainan Island, the tianya Haijiao scenic spot became a symbol of the surveying and mapping of the south pole of China's land map. Chincha officials in charge of mapping. Here the cannonstone inscription engraved the four characters of the book "Sea Judgment South Heaven" as a sign and must be preserved forever. As a result, the southern sky of the sea has become the earliest stone carving in the area of the end of the world.
No matter who inscribed the word Tianya, the location of Tianya's end refers to Sanya. However, in recent years, some scholars have put forward another view, they believe that the ancients proposed that the end of the world should not refer specifically to One place in Hainan, but also to Lingshan, Hepu and other places in Guangxi today. According to historical data, these places were named the end of the world, even nearly seven hundred years before the cliff line at that time. That is to say, before the bluestone inscription on Hainan Island became famous, there was already a place at the end of the world.
These two views have their own reasons, and it is not yet possible to draw a final conclusion as to whether they are right or wrong, and where the ends of the earth are.