Is it useful for the king to come back from abroad in the kingdom era?

It's useless, it's just consuming your resources.

Requirements for transnational immigration: Union currency 8 10w is required. Loss of transnational migration: strength is not affected, and resources can only take the amount of the guarantee limit. The most terrible thing is that the arena ranks at the bottom of the new district, with a bottom of more than 10 thousand. Every time you hit the top 300, it takes n days to return to the top 50. The replacement price is too high: 25,40,700, which is too high.

Summary: Players should not pay attention to the losses and adverse effects of transnational immigrants in the kingdom era, let alone return your level to 0, or resources to 0, or soldiers to 0, or anything else. That is to say, only resources will be reduced, and other things will remain unchanged, and we should try to use them up before emigration. Note that immigration is equivalent to moving to a higher place, where you can move and choose a good location.