Position: It comes from futures and represents a certain amount of goods or objects held before delivery. The stocks here represent the stocks you have bought.

Total amount: the total amount refers to the sum of the trading volume of the stock on the trading day so far. For example, if the total amount is 500, it means 50,000 shares, and the current amount refers to a transaction that has just been concluded. (all are based on hands, one hand 100 shares. )

External disk: S is the volume dominated by the seller. The seller certainly hopes that the higher the price, the better, so the stock price will rise relatively and be marked in red.

Inner disk: B is the volume dominated by the buyer. The buyer's bid is low, so buying is mainly represented by green words.