Vixen Blac Chyna isn’t playing around when it comes to her kids. The hip-hop model has singled out ex-fiancé Rob Kardashian over their child support battle.

Last night, BC went to her Instagram Story and didn’t hold back on ripping Rob.

Earlier this month, details emerged about the arrangement ChyRo have with daughter Dream Kardashian.

We’re told the former couple manages their 50/50 split like this — 4 days with one parent and 3 days with the other … and they switch that up week-to-week. Sometimes there’s scheduling conflict with either Chyna or Rob, but they’ve learned to pivot without any real drama. A big reason for their success … nannies!!! We’re told both Rob and Chyna have their own who handle all the baby hand-offs. (TMZ)

Kardashian is currently dealing with a court battle for how much he’s paying Chyna in child support.

Here’s the thing … Rob and Chyna intensely dislike each other, but they have figured out a way to wall off their feelings when it comes to their daughter. As we reported … Rob’s gone back to court asking a judge to lower his child support payments, which had been set at $20k/month. We’re told Rob had planned to request the payments be chopped down from the get-go, and only agreed to the hefty child support to get Chyna to back off her domestic violence claims … which could’ve hurt him. (TMZ)

A few months ago, buzz developed about Chyna possibly catching heat from her ex-fiancé over a Six Flags attack involving their daughter.

Sources connected to Rob say he has been watching Blac Chyna’s antics in horror for months and is increasingly worried for his daughter’s health and safety. The last straw was turning Dream’s stroller into a weapon as she attacked a woman who dared to touch the kid. We’re told Rob and his lawyers will file legal docs asking for a hearing to set clear rules for Blac Chyna … what she can and cannot do when the child is present. (TMZ)