August 4th is about discussing the debt ceiling of the US dollar. At that time, the whole world was in turmoil, and the more turbulent it was, the more it needed to avoid risks. The dollar is a safe-haven currency. Once safe-haven funds are transferred from gold or yen to dollars, the dollar will definitely soar. Moreover, in order to avoid risks, the yen will depreciate, because it is necessary to cut interest rates or print money to release liquidity, or buy dollars to hedge the risks of foreign exchange reserves, foreign exchange holdings and US debt. Naturally, the dollar rose and the yen fell, resulting in a sunny line.

The exchange rate between the US dollar and the Japanese yen can be regarded as a sign of the economic turning point.

On August 4th and June 30th, 10, 3 1, Japan intervened in the foreign exchange market and bought a lot of dollars, which rose sharply.