Spot hand: the real-time turnover of stocks. The minimum trading volume in the stock market is 1 lot, that is, 100 shares. For a stock, the latest trading volume is called cash. For example, A orders 5 yuan to buy 100 shares, and B orders 50 1 yuan to sell 300 shares. Of course, there will be no deal. 5 yuan is the buying price, and 5.0 1 is the selling price. At this time, C placed an order for 200 shares at 5.0 1 yuan, so 200 shares of B were sold to C (and 100 shares were not sold). At this time, the transaction price is 5.0 1 yuan, and the current hand is 2 hands, that is, 200 shares, and the display color is red. Still under the above circumstances, if Ding orders 5 yuan to sell 200 shares, then A and Ding have a deal. At this time, the transaction price is 5 yuan. Because A only bought 100 shares and sold 100 shares, the current hand is 1 and the color is green. Therefore, the transaction that actively adapts to the seller's price is red, which is called the outer disk. Take the initiative to cater to the buyer's price and clinch a deal, which is green and called inner plate. The number of hands that have reached the latest transaction between the current hand and the main hand. The bottom right of the disk is the real-time details of each transaction. The red arrow indicates the number of transactions at the selling price and the green arrow indicates the number of transactions at the buying price. The master hand is the total number of stocks traded from one day. At the close, "master hand" refers to the total number of shares traded on that day. For example, at the close, there was "master hand 250243", which means that 250243 lots were sold that day, that is, 25024300 shares. Note (spot in futures is the same as spot in stocks).