Spring and Autumn Avenue is unlike Wu Ya's ability to change time on a small scale; it generally changes significant events. It's not very useful in everyday spell battles, but when facing a crisis, it can defy the heavens and change fate.
But this path also has its limits. First off, the targets of change cannot have a cultivation exceeding that of Daoist Master Chun Qiu. For example, if Gong Yangqi wanted to return Evil Ksitigarbha to his suppressed state or turn a Demon God into a member of the Human Clan, such things would be impossible.
Secondly, the accumulated spiritual power required cannot exceed his own cultivation. Once it does, it might directly deplete his lifespan.
The task of restoring the destroyed Yu Capital City back to its original state was entirely beyond Gong Yangqi's cultivation.
