The opening price of futures is yesterday's average transaction price (settlement price), which is influenced by many factors, such as the trend of the external market and various unexpected factors. The so-called high opening means that the opening price is higher than yesterday's average price (not necessarily higher than yesterday's closing price), and the low opening means that the opening price is lower than yesterday's closing price. For example, sugar: yesterday, the average price was 7000, and the closing price was 7030. Today's opening price of 7020 is 20 points higher.