There are some errors in the text, which have been revised.
Today, when the author was reading the previous chapters, I found that the last request to upgrade to an intermediate kingdom mentioned in the chapter on upgrading the Summoning Gate was written as "Conquer 2 elementary kingdoms that are not under the scarlet lord (0/ 2)', this is a mistake of the little author, it should be 'conquer 2 primary kingdoms under the command of the scarlet lord (1/3)'.
That is to say.
Next, the protagonist only needs to conquer two primary scarlet kingdoms to advance to the middle-level kingdom.
It has been modified now, just refresh it.
In this month, the author will add more updates to this question.
I wish you all good health, smooth career, harmonious family and happy mood.
(It’s even worse in the past few days, because I have to accompany my father-in-law to Changchun Hospital to see a doctor.)
(end of this chapter)