1. The total number of trading lots. For example, if there were 100 lots before, and now someone has traded one lot, that would be 101 lots.

2. The number of lots traded at that moment, some people traded one lot, some people traded three lots, and so on.

3. External offer, the entrustment is done at the selling price. If the external offer is greater than the internal offer, it means that the buyer is strong, because all the entrusted sellers have been bought by the buyers, and the strength is very strong.

4. The internal market is understood to be the opposite of the external market.

5. Sell. Investors believe that the price will fall in the future, so they sell at a certain price. When the price really falls, they buy to close the position and make a profit. The word "sell" you mentioned on the market means that when you want to buy, the transaction will be completed at the selling price of 4799 from other investors.

6. Buy and sell and vice versa.