"HI" is "cup" in English.
To convey the spirit of thrift, if you pour too much, everything will flow out of the bottom hole.
It is a sake vessel, and the decoration in the center is a gourd.
This mechanism uses a principle called the siphon method.
If the pipe is full of liquid, it will not be pumped and will continue to flow, even if there are points in the pipe that are higher than the starting point.
It is a vessel that teaches us that if we become greedy, we will lose everything.