1. In-game: In addition to filling in the price and shelf time, there is also the option to choose whether to designate a buyer. If yes is selected, you need to fill in the buyer ID in the input box again, so that the buyer will be specified when you put it on the shelves.

2. Web version of Jubaoge: Log in to Jubaoge with the role pass and find what I want to sell, and then you will see what I want to sell. You can also put it on the shelf here. When you put it on the shelf, you can also choose whether to designate a buyer. As long as you choose, you must enter the buyer ID. If you put it on the shelf after typing, you have already established a buyer.

After the designated buyer logs in to Jubaoge, he will be prompted to specify my items. He can see my list of items when he opens it, and he can complete the specified transaction by choosing to pay.