1. Align the yellow fan-shaped knob with the cork and screw it down vertically—be careful, do not tilt it—until the metal screw can be seen in the center of the lower end of the cork.

2. Slowly and forcefully twist the yellow plastic cap at the lower end of the fan shape. At this time, the cork will slowly rise from the neck of the bottle along with the yellow plastic screw cap and exit the bottle. It is OK.

Please note: You can't abandon step 2 and use force to pull it out, it will be difficult for a weak person or woman to pull it out; a strong person may just force the wire out of the cork without the cork moving, as in It's like a slippery thread, and it's not so easy to screw it in.