What does it mean that the language of the lonely world has changed from "the emperor's star is unclear, which is a lonely world" to "the emperor's star is clear, which is a lonely world"?

At first, the world was in chaos. The Northern Wei Dynasty was divided and the imperial power was marginalized. The two emperors of the Northern Wei Dynasty had to deal with the powerful minister Gao Huan and the powerful minister Yu Wentai respectively, so the emperor's star was unknown. Later, Yu Wenyong destroyed the Northern Qi Dynasty and unified the Northern Dynasty. After the death of Yu Wenyong, the power of Emperor Wen of Sui Dynasty was unshakable, and the Southern Dynasties weakened, so he was called the emperor star. But anyway, the world is lonely. In fact, the world fell into the hands of Tang Gaozu, the son of Dugu Mantuo.

The prophecy in Lonely World is that "the emperor star is nameless, and he is alone in the world." It means that whoever can get help from the Dugu family can pacify the world.

Extended data

The Southern and Northern Dynasties were in troubled times, and the situation was complicated. In the third year of Emperor Yongxi of the Northern Wei Dynasty, Gao Huan, a powerful bully, was crusaded by Xiu Yuan, Emperor Xiaowu of the Northern Wei Dynasty, but Xiu Yuan was defeated by Gao Huan and suppressed by his soldiers in the suburbs of Luoyang. At this point, many people in Xiu Yuan's camp have fallen, and Xiu Yuan, in a panic, led five thousand Qin Bing to flee overnight and rushed to Guanzhong, intending to attach himself to General Yu Wentai.

On the way to escape, Xiu Yuan had a narrow escape, and only under the escort of Dugu, the viceroy, and Yang Zhong, the general of Anxi, was he able to save his life. That night, Xiu Yuan and his party rested in a ruined temple, and the wall of the temple was covered with many words. Dugu got his wish and told the emperor that this word was used for divination. Xiu Yuan was very interested, so he quickly took a divination according to Dugu's wish, and the words "The emperor's stars are unknown, and the world is lonely" were written on the divination.