TH1 going from Right to Left?

Hello dear experts.

I hope that someone could help me out.
What I would like to do is to have the two 1-dim histograms “facing” each other in a horizontal plane, i.e. one will be ‘growing’ from the left to right, and another is from right to left (meeting in the center).

They do not have to be in the same pad / overlaid, as long as I will draw the pads close together to simulate the effect / scale of them meeting, it’s all fine.

I have seen the example of ‘hbar’ option, does not solve growing from the right to left…
here is something that I would look like really need to get: