The second delivery date of treasury bond futures means that it is the payment date. According to relevant information, the delivery rules of treasury bonds futures are as follows:

1. If the second delivery date is delivered in normal mode, it is the payment date. At the time of settlement on the same day, the exchange will transfer the settlement funds from the settlement reserve of the buyer's settlement member to the settlement reserve of the seller's settlement member, and at the same time release the deposit occupied by the positions entering the settlement. Where delivery is made by means of securities trading, the securities trading day shall be the securities trading day.

3. On the third delivery date, if the goods are delivered in normal mode, that date is the date of receipt. The exchange transfers the deliverable bonds to the bond custody account of the buyer's customer. When the settlement is made on the day of delivery by means of securities trading, the exchange will release the deposit occupied by the positions entering delivery.