Seeing Tang Xichen's Six-winged Angels, Rosen suddenly felt some confusion and asked, "For the Angel Race, the Twelve-winged Angels should be the pinnacle, but if the lord's buildings can continuously upgrade, does that mean no more angel units will appear after the Twelve-winged Angels?"
This question had always puzzled Rosen. After all, the Angel Race is divided by the number of wings, with twelve being the ultimate, unless there's a mutated Angel, an Angel who has eaten genetically modified food, or one affected by nuclear radiation growing extra wings.
But none of these explanations seem reasonable.
In other words, in the later stages, there shouldn't be any more angel units under Tang Xichen's command.
However, Tang Xichen denied Rosen's assumption.