The main reason Xiaoxiao had chosen Killer Bee Valley as her training grounds was because the Killer Bees here had virtually zero resistance against water magic, which was ideal for an Aquamancer.
As soon as Qin Ruo's Twelve Frostramparts Formation went up, the entire situation turned around. A hundred Killer Bees emerged from the blizzard to assist the Golden Killer Bee, but now they were within range of Qin Ruo's magic, and before they could repeat that sonic attack from before, their wings were already covered in a layer of frost.
Not only did this slow their movement down tremendously, the frequency of their flickering wings dropped to the point that the movements could be tracked with the naked eye, making it impossible to perform that sonic attack anymore.
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