The liquid contained in this type of pot or drinking vessel.
Let's look at the definitions here, to deceive by trickery, well that's got nothgin to do with drinking or drinking vessels.
"jue ( wine vessels), a tripod with a handle and open spout; gong, a drinking vessel,with spout at the front, handle at the back, a square stand or four legs and a lid; Li, a cauldron for holding meat and cereal crop;"
The implication is that it may derive from drinking vessels made from a piece of bamboo.
His skull was rimmed in purest gold and used for years by the Kings of the Ashanti as a ceremonial drinking vessel.
Original the character was a representation of an ancient drinking horn, shaped like a funnel, in addition to his rightful belongings, man also appropriated this drinking vessel.