Trading turnover on the foreign exchange market was US$5.97 billion in August, down 15.22 per cent against July, the Shanghai Securities News reported yesterday. August turnover of the yuan against the US dollar was US$5.59 billion, the newspaper reported but did not give comparative figures. A total of HK$2.52 billion was traded last month it said. The yuan continued to rise against the US dollar, with the weighted average price at 8.28 on the last trading day in August, up 19 points from the price at the end of July, it added.