The Evil God Descends, I Own Great Hell summary:

In the apocalypse, an evil god descends, devouring humans and threatening my homeland, China! Little do they know, I hold the control of the Demon-Suppressing Hell, where countless gods and ancient monsters from China have been secretly imprisoned for thousands of years! All for this moment... to annihilate the foreign gods and cleanse the human world!— Of course, if you surrender, as the Warden, I might consider letting you evil gods into the Great Hell to work on sewing machines. Meals and accommodation are provided, of course.