1. According to relevant information, the daily turnover of the foreign exchange market is about 5-6 trillion US dollars. From this perspective, the foreign exchange market has sufficient market depth and liquidity.

2. Precious metals and crude oil belong to futures. The data of foreign exchange market in previous years was $5 trillion a day, and it has been the largest financial market for many years. The global market is about 1 billion lots 1 day (including options).

3. Foreign exchange is considered as the most flexible and liquid financial product in the world, and the most active and liquid financial product in the world. The daily turnover of global foreign exchange is estimated to exceed $4 trillion.