The outer disk is an active buying disk. If the external data is greater than the internal data, it means that the buyer is strong and the futures contract may rise.

For example, when the declared selling price of a soybean contract for one month is 460 1 yuan/ton and the declared buying price is 4600 yuan/ton, if an investor suddenly trades at the price of 4600 yuan/ton, the money will be included in the external market. It will be represented in red font on trading software.