First of all, upgrading a world's level was not a slow process, but a jump!
If anyone had played Original God before, they would know that when the level of the game world increased, the monsters in the entire world would increase in level. They would become stronger and have higher HP. They would no longer be able to defeat them.
It was the same in the Empire Era. When the world level increased, the Empire Era NPCs that were just ordinary top-tier generals would suddenly become Inborn NPCs!
This was the reason why there were so many Inborn Experts after the world level increased. As the world level increased, the concept of their strength also increased to the level that the world level should have!
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