How to play the box drawer?

Nancy box drawer processing method is as follows:

1. Enter the blind box page, and the picture as shown in the figure will appear. The blue box represents the optional blind box, and the gray box represents the sold blind box.

2. There may be two situations on each purchase page. One is that you can buy directly without queuing.

3. Click on the random blue box, select the corresponding blind box, and then make a purchase choice. As long as you see the blue dot.