The first one is a coin from Kazakhstan with a face value of 20 tenge. The back of the coin is the national emblem of Kazakhstan. There is no exchange rate between Kazakh tenge and RMB, so it should be converted by the exchange rate between Kazakh tenge and US dollar. Twenty Kazakh tenge is only equivalent to about RMB 1 yuan.

The second coin is a Ukrainian coin with a denomination of 25 kopecks (the currency unit of Ukraine is "Grivner" and the token is "kopeck", 1 Grivner = 100 kopecks). The back of the coin is the national emblem of Ukraine. Ukrainian Grivner can't be exchanged with RMB without an exchange rate. It should be converted with the exchange rate of Ukrainian Grivner and US dollar. 0.25 Ukrainian Grivner (25 kopecks) is only equivalent to 0.2 yuan RMB.