Originally Posted by mlin32

With land borders, it's generally not possible from the EU countries at the moment given the geopoltical situation.

Unionpay is theoretically accepted in Russia (along with many other European countries) but i doubt many mid or smaller merchants take them. The issue is that it's not so easy for non-Chinese people to get a Unionpay card in the first place, so a merchant would really be catering to Chinese tourists to accept it.