The foreign exchange market has also undergone significant changes in the short term. The weak yen reversed due to the Bank of Japan's unexpected interest rate hike at the end of July, but weakened again due to the Bank of Japan's "admission of weakness" (implying no interest rate hike within the year) caused by the market shock. The Chinese yuan against the US dollar also returned from 7.09 to around 7.18 in just two days.