Union pay and Chinese banks vs. visa

I have read a few threads here about people nervous about VISA and others reporting their card activities. I thought, why not open a Chinese bank account (not in China), they have branches outside China. I think other banks offer Union Pay cards too so may not need to be at a Chinese bank, for example I seen a bank in the Seychelles that offers Union Pay cards.

Once on the Union Pay network they report to mainland China and not you the western countries correct? Unless your a mainlander...

Union pay and Chinese banks vs. visa