The formation of transaction price follows two principles: price priority and time priority.
If the highest buying declaration and the lowest selling declaration are the same, then this price is the transaction price;
When the buying declaration is higher than the selling declaration, or when the selling declaration is lower than the buying declaration, the price declared first is the transaction price.
If the highest buying price hanging on it now is 9.97 yuan, the lowest selling price is 9.98 yuan. At this time, there are two bills of 9.98 yuan, and the transaction price is 9.98 yuan.
If the bills of 10 yuan and 9.99 yuan exist at the same time, the bills of 10 yuan will be sold first, and the transaction price is 9.98 yuan.
If there are both a pay order of 10 yuan and a sell order of 9.90 yuan, the transaction will be prioritized according to the principle of price priority, and the transaction price is (9.90 yuan+10 yuan) ÷2=9.95 yuan.
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