The yuan's drop against the dollar since August hasn't lifted China's exports. The Ministry of Commerce says the country never intended to boost trade through a lower yuan. 
 
"The yuan has been dropping due to rising US dollar on the Fed's moves. We see two phenomenons: the yuan's changes versus the dollar is in line with the changes of other major currencies against the greenback, and the yuan's exchange rate has been relatively stable against a basket of currencies. Currency volatility is not the main factor on trade. This is a global consensus. We want to emphasize that exchange rate is a double-edge sword for trade, and a stable yuan in an unstable global economic environment bodes well for China's exports. That means, China has not intended to boost trade through currency devaluation." China Ministry of Commerce spokesman Shen Danyang said.