Know and hangout with folks from both. Spent a month in taiwan for friends wedding. Freeist for asia doesn't make it free. Friend actually got scooped up and held at one point not that long ago because his parents thought they did him a favor registering him with their government as a child for dual citizenship. So the customs people on one of his 1-2x yearly trips suddenly had him flagged for essentially draft dodging. (Born in the US I thought, or maybe it was taiwan and immediately moved here I forget, either way they hadn't bothered to tell him). Fortunately he knew some people who could pull strings before it also became kinda an incident as he's a serving E-8 in the army with some actual clearances working with special people.
So while it's a far cry from being china, I was being hyperbolic, still not a place I'd test my chances in.