In the stock market, many softwares use colored entities to represent negative and positive lines. In the domestic stock and futures markets, red is usually used to represent the positive line and green is used to represent the negative line. However, investors who participate in European and American stock and foreign exchange markets should pay attention to the fact that in these markets, green is usually used for the positive line and red for the negative line, which is just the opposite of domestic habits.
Futures, whose English name is futures, is completely different from spot. Spot is actually a tradable commodity. Futures are mainly not commodities, but standardized tradable contracts based on some popular products such as cotton, soybeans and oil and financial assets such as stocks and bonds. Therefore, the subject matter can be commodities (such as gold, crude oil and agricultural products) or financial instruments.