That said, if both a regional and strategic bomber were to be pursued, it would seem to make more sense to invest in the regional platform first, as that would line up better with China's evolving strategic priorities over time, while also being cheaper to build and therefore able to generate greater numbers. That H-20 is apparently going ahead as basically a Sino B-2 is therefore a mark against a dual bomber structure.
I was having a similar discussion over on CDF just earlier about the rationale between a strategic vs regional bomber, here's part of one of my posts where I explain the rationale and reason behind a PLAAF strategic bomber:
... what a strategic bomber with intercontinental combat radius does allow is the ability to operate from airbases in China's heartland and reach out to US bases deep in the pacific and launch large numbers of powered or unpowered guided conventional munitions against them using only one or two aircraft.
Let's put it this way -- a true strategic bomber means you can have a single H-20 carry the equivalent of, let's say three H-6Ks worth of LACMs, with a combat radius that is twice as large as a H-6K, and this is all without getting into the VLO nature of H-20 as well.
So instead of needing three H-6Ks to carry that payload + the additional need for forward basing or air refuelling (H-6Ks can't air refuel currently anyway) + extensive CAP SEAD/DEAD and EW to allow them to reach a designated launch zone, you can have a single H-20 that carries the same payload to the same launch zone without needing air refuelling or forward basing or extensive CAP SEAD/DEAD and EW support.
Now, a stealthy supersonic regional bomber would also be able to do that mission but obviously it would need more sorties for the same effect -- but when weighing up developing ONLY a regional bomber or ONLY a strategic bomber, we eventually have to face the fact that if a strategic bomber's sheer range is ever needed then a regional bomber simply isn't going to cut it.
Or putting it another way, both a strategic and regional bomber can conduct regional bombing and strike missions, but of those two only a strategic bomber can conduct (non-air refuelled) strategic ranged missions if required.
I do think developing a strategic bomber in the form of H-20 doesn't mean they can't later also develop a regional bomber like the JH-XX model, but I think if they had to develop just one of those two, I think going with H-20 makes sense.