Scenario where PIDW Bingge had something like the fucked up baby dimension from Fire Emblem: Fates for handling his kids.

For those who haven't played enough Fire Emblem games: in Fates you can hook up various characters who will, once they've bonded sufficiently, get married and have children. Because there is a dangerous war on and nobody has time for childcare, these babies get sent to various pocket dimensions where time moves differently, where they are raised by servants. They then reappear in the story as adults (mostly) who are also just like, barely younger than their own parents. This is of course hilariously fucked up, for even more reasons than what a simple overview can convey, and it's also just kind of shrugged off by the narrative despite the many, many bewildering implications involved.

So I'm imagining Airplane stealing this whole concept and sitting down to write about Bingge sending all of his children away in order to protect them from his enemies or whatever other excuse, creating special nursery dimensions with Xin Mo only to not really spend any time with his offspring at all, resulting in a lot of them growing up extra fast and reentering the story as adults at wildly unpredictable intervals (i.e. whenever Airplane feels like it without having to remember the timelines involved because *waves hand* time passes differently in the different dimensions too). For the daughters, this just gets them married off into alliances (if they're even mentioned at all, because Airplane doesn't want to write incest and there's basically only one reason female characters get mentioned in this story), but for the sons, this usually has them showing up as upstart challengers to their father's throne. With a conclusion, generally, of them getting their asses kicked and then being sent back to their pocket dimensions with their tails between their legs (Binghe killing his own kids would be too reprehensible, after all). Sometimes (rarely) they become loyal generals. One or two have died to fuel revenge arcs. The protagonist halo extends only limited benefits to his kids.

Anyway, Shen Yuan of course reads all of this and absolutely hates it. What do you mean Binghe doesn't even raise his own kids?! What do you mean even their mothers don't?! Shen Yuan understands that Luo Binghe is an important guy with important things to do, but handling it this way makes it impossible to even consistently visit his children on their birthdays! They'd be having birthdays every day because they're all on freaking Narnia time! And of course his sons keep growing up and trying to overthrow him, surely Binghe himself should appreciate that under these conditions, his children are going to see the servants raising them as parents more than some distant emperor they've never met...? Not to mention, if time moves quickly in these dimensions, theoretically Binghe could just stay there with his kids himself and not have to worry too much about things changing in his realm, because only a few months would pass there! He could have it both -- spend plenty of time with his kids and not worry about neglecting his responsibilities! So why doesn't he do that?!

The answer (never actually provided by Airplane) is that Bingge doesn't really feel a strong connection to his children, and because of his reverence for his adoptive mother, he thinks that giving them peaceful lives with simple people to raise and love them is the kindest thing he can do for them. If he could have had an idyllic childhood with his mother in a place where nothing could harm him, he would have never sought power at all.

But of course, Binghe's kids aren't thinking "oh gosh yeah my humble childhood in a magic dimension was much better than starving on the streets!" because that wasn't ever going to be their fate in the first place. Instead they all develop varying complexes about being sent away by their impossibly remote father and his giant harem.

Possible fic ideas involving this setup:

-Bingyuan where Shen Yuan transmigrates into the intended tutor of one Luo Binghe's most troublesome sons. SY arrives in the baby dimension and immediately bonds with the little Luo, gets really mad about the whole situation all over again, and when Bingge shows up for a rare visit, rips him a new asshole about it. Romcom shenanigans ensue.

-Scenario where SV's Shen Qingqiu and Luo Binghe decide they're ready to adopt, and SQQ figures out a back door into PIDW Binghe's baby dimensions and just sort of, ehm, borrows some of the children he knows had really bad times in the novel (not all of the idyllic upbringings worked out, there were instances of the dimensions being attacked and the servants there being killed and etc). Bingge eventually finds out. Dramatics ensue.

-When PIDW Binghe tries to summon a Shen Yuan of his own to the PIDW world using Xin Mo, it accidentally creates some stability issues with the baby dimensions. Shen Yuan get teleported in and out of these dimensions instead, bonding with the kids there to various degrees, only to be swept away every time Bingge tries to use Xin Mo to find him again. A handful of years later, a bunch of new Heavenly Demon scions emerge as adults with the Luo family's Shizun Complex in full swing, right around the same time that Bingge finally captures Shen Yuan. Hijinks ensue.