Speaking seriously, there is a solution to the problem, but Li Ping'an is not happy.
The task of having a child, especially when it is a childbearing task, comes with immense pressure regardless of one's status or living environment.
It's like opening a blind box.
You have no idea what kind of offspring you will have, in terms of type or personality.
And now, he must give this issue serious consideration.
The Qi Cultivators across various regions are on the brink of rebellion, the Heavenly Court's immortals are busy explaining everywhere that 'it's really not us,' and he, as the Heavenly Emperor, holds the only solution to this trouble, hence, he cannot back down.
Besides, he does have wives, both primary and secondary, plus half a beloved confidante, meeting the conditions for this matter.
As for the child being a certain someone reincarnated...
This involves the common knowledge of the cultivation world.