After establishing a kingdom, one would be on equal footing with an NPC kingdom. One would have equal rights of speech, receive the title of nobility, be able to issue national quests, create announcements, and so on...
It could be said that after establishing a kingdom, one would unlock a new way of playing the game.
Of course, the requirements for establishing a kingdom were extremely high. In his previous life, no guild on Earth had been able to reach such a stage. Meanwhile, the process of establishing the Dragon Empire and some of the mechanisms was probably very different from establishing ordinary human kingdoms.
When he thought of this, Li Cheng looked at the new quest he had unlocked.
[Former empire]