Mu You walked up to the cork of the bottle.
Previously, when the black-robed man was alive, he had been unable to push out the cork, but now he easily opened it.
After coming out of the bottle mouth, Mu You's stature surged and returned to its original height in an instant.
Looking down, the wine bottle was resting under his feet, looking very similar to the glass bottles discarded in the bar.
Mu You picked up the wine bottle and re-corked it.
This item was handy for duelling, preventing the opponent from fleeing, but one must avoid the situation just now: If you lock yourself and others inside but are weaker than them, you would be taken advantage of and meet a tragic end like the black-robed man.
Therefore, unless you're completely certain, it's best not to casually use it on strangers.
Of course, besides fighting, this bottle has other uses like storing large items that are inconvenient to carry, such as— the Ghost Ship!