Wells Fargo said that in the absence of a catalyst to trigger a reversal, the current theme of dollar strength and carry operations may continue further. Chidu Narayanan, the bank's chief Asia-Pacific strategist in Singapore, said: "With other G10 central banks cutting interest rates before the Fed's possible action in September, the widening interest rate differentials may further support the dollar." Narayanan added that next week's CPI inflation data will be key. It is expected that USD/JPY has further upside. The yen has weakened and is approaching its short-term fair value. The short-end interest rate differential has always been a key driver of the USD/JPY trend. USD/JPY may approach 156-157. The Japanese Ministry of Finance is expected to tolerate a slight further weakening of the yen. Compared with the specific level, the speed of yen depreciation and the serious deviation from fundamentals will be more worrying for the Japanese Ministry of Finance. (Sina Finance)