The BYD Seagul at 12k$ is not really the type of car that could be successfully exported in western markets. The 30kwh battery is too small. I could see the upper trim with the larger battery being successful in Europe, but this is absolutely not going to work in USA.
A better comparison is the 27k$ made in china BYD seal vs the 38k$ made in USA Tesla model 3.
And also there is a massive price EV price war in China. I don’t believe any of their EV manufacturers is currently making money at those prices.
Even when they exports to lower income countries like Thailand, they are significantly more expensive.
They banned destrucive research for new rooms, because some researcher decade ago, enthusiastically drilled a bunch of holes to nowhere in order to do find them.
They still allowed the non destructive muon imaging a few year ago that heavily hinted to an unfound room.