Got it. There's a neutral warehouse. There are bulls and bears every day. At the close, if the bulls are bigger than the bears, it means that the bulls are not active, which leads to the short positions not being fully closed. Therefore, member companies will take a neutral position. If the bulls are bigger than the shorts on that day, the member companies will fill the positions that cannot be closed as additional parties. However, because long trading is not active, it must be paid to the empty side, including short positions and compensation for short positions. This is the extension fee. For example, on that day, there were 1 1,000 long positions, 1 1,000 short positions, 500 long positions wanted to collect money, and 800 short positions wanted to pay money, so there were still 300 short positions that could not be closed, so 300 short positions were needed as an additional party.

Therefore, the direction of deferred payment is that the party with more positions pays the party with less positions, and the excess deferred payment is paid to the neutral position. As a neutral warehouse, the amount of funds is very large, which ordinary personal funds can't do.