Russia is considering buying the currencies of "friendly" countries such as China, India and Turkey to hold in its National Wealth Fund (NWF), having lost the ability to buy dollars or euros due to sanctions, the central bank said on Friday.

The bank said it was sticking to the policy of a free-floating rouble exchange rate but highlighted that it was important to reinstate a budget rule which diverts excess oil revenues into the country's rainy day fund.

Liquidity in yuan-rouble trading has approached the levels of the euro-rouble currency pair on the Moscow Exchange.

In the first half of 2022, average daily trade turnover for the yuan rose more than 12-fold, according to the exchange.