From the perspective of geomantic omen, if you break the cup for no reason, it is very likely that you will encounter an accident or even a disaster soon, and the broken cup is actually protecting you from the disaster. And then you may encounter the next disaster, so be sure to pay attention after breaking the cup.
There was an accident recently.
Breaking the cup means something has happened recently. Although breaking a cup means that the cup has blocked a disaster, it doesn't mean that you are safe, because there may be a second disaster, a third disaster or even more. You can't block a disaster every time, so you may encounter a disaster sooner or later.