If you want to participate in the bidding, you will participate in the bidding between 8: 55 am and 9: 00 am. Suppose you are sure that today's opening price will be the highest, and you want to open a position at the opening price. Take soybean meal as an example. If you expect today's opening price to be 3300, you can bid twenty or thirty points lower than this price. If the opening price is 33 10, your opening price is still 33 10. If the opening price is lower than your quotation, you won't close the deal. If you want to buy at the opening price, you can do the opposite.