The strike came without warning, and its range was enormous. Since Dream Lyra had not teleported away in advance when it "saw" the other side charging up, once the enemy's attack was launched, it had no way to dodge.
The pilots aboard Dream Lyra, all in Third-Person Piloting Mode, could see that the fully charged Vacuum Zero-Point Energy was swallowed by the microscopic world in one gulp, then vanished without a trace. Immediately afterward, the microscopic state of their own location changed.
Human Civilization's judgment was the same as the Silver Heart Civilization's: this was a strike carried out by mapping the microscopic onto the macroscopic—that was, by mapping higher dimensions onto lower dimensions.
Clearly, this was another method of attack that Fast World Collapse could not affect.
No wonder the Silver Heart Civilization was so anxious that it had sent a message urging Dream Lyra to act faster. It seemed they had also realized that Fast World Collapse had not had much effect on the Unknown Civilization.
For a pilot in Third-Person Piloting Mode to observe it was equivalent to Dream Lyra detecting it.
What rule had been changed?
The observational data was quickly compiled into the String-based Computer, and the answer immediately appeared before humanity.
The pilots focused on observing the microscopic environment only sensed that the rules of one type of Calabi-Yau Space had been changed. They did not know exactly how, but that change directly caused the phenomenon of Quark Flavor Change to occur.
The Unknown Civilization did not seem to have absolute control over this technology. Of course, perhaps it was also because it was being used as a weapon: the Quark Flavor Change strike they fired had no real pattern. In other words, the type of Quark Flavor Change was not fixed, but randomly