The simulated imperial residence is not full, and there are no new immigrants.

Lack of corresponding supporting facilities.

The main reason is the lack of corresponding supporting facilities. If the house lacks facilities such as entertainment or sacrifice, the population will naturally be dissatisfied.

Click on the game options in the upper right corner of the game, and then find the empty house on the right under the game options, and then the game will automatically let NPC occupy the empty house in the town.