The first picture shows Ukrainian 1 Grivner banknotes. On the front of the banknote is Vladimir I, the Grand Duke of Kiev, Ukraine, and on the back is Vladimir Castle in Kiev, the capital of Ukraine. Ukrainian currency is not freely convertible, so it cannot be exchanged in domestic banks. It must be converted with the exchange rate of USD and Grivner, Ukraine, and 1 Grivner, Ukraine is approximately equal to RMB in 0.8 yuan. But domestic banks can't exchange it. However, it is collectible, and the brand-new one is probably worth RMB in 6 yuan in the postal currency trading market.

The three banknotes in the second picture are all Belarusian banknotes, namely 1 ruble, 5 rubles and 10 ruble. Belarusian currency is not freely convertible and cannot be exchanged in domestic banks. There is no exchange rate between Belarusian rouble and RMB, so it must be converted with the exchange rate of US dollar and Belarusian rouble. 100 Belarus ruble is about 3 cents RMB. But it has collection value, and each piece is worth about 2 yuan RMB in the postal currency trading market.