Outside market: actively buying inside market: actively selling outside market refers to foreign futures trading, commonly known as "outside market", including futures trading in Hongkong and Taiwan Province, which is also called outside market, and domestic trading is called "inside market". The trend of the external market guides the whole international futures market, so the domestic trend often follows the trend of foreign countries. Most participants in external market transactions are international investment institutions and funds, including domestic hedge institutions, such as metal systems companies and petroleum systems companies. Some big exchanges in the world have electronic transactions, and local normal working hours are on-site transactions. After the floor trading is closed, traders can enter the electronic trading, but the trading volume is generally small at this time, because there are fewer customers participating in the electronic trading, mostly foreign customers. For example, CBOT has an Asian electronic disk trading market, and LME also has electronic disks, so we can also see that the external disk changes during the day, but these electronic disk transactions are not 24 hours, but also have time periods. The settlement price is an average price, and the fluctuation range is compared with yesterday's settlement.