China will allow the yuan to rise China can strengthen its national currency by 5% at once, says Jim O'Neill, chief economist at Goldman Sachs. However, China will take such a step not under the influence of the West, but for the sake of curbing inflation. "I firmly believe they will change the exchange rate soon," Mr. O'Neill said. In his opinion, China could agree to a one-time revaluation of the yuan by 5%, and then allow it to trade in a wider range.