The black cross often signifies the Dark Sanctuary, and it's also a common practice for them to paint a black cross on bullets.
So, upon seeing this bullet head just now, Lu Yu immediately realized that the assailant Ghost Eye from the dome was indeed a member of the Dark Sanctuary!
With this thought in mind, Lu Yu took the severely deformed bullet head he had retrieved from the pure steel structure of the dome out of his pocket. Examining it closely under the light of his phone, his face revealed an expression of understanding.
Comparing the severely deformed armor-piercing bullet with the regular bullet marked with a black cross in his hand, Lu Yu could clearly see that it was the result of two different factions targeting him.
If both attackers were from the Dark Sanctuary, then both bullets should have been marked with a black cross.
