They sped all the way, breaking through all the way.
Ian found that Yisen actually had considerable combat talent. Although initially he didn't even know how to strike a vital point, he quickly learned how to attack the lower body and generalized from his existing knowledge of bio-alchemy. He easily caused many Magical Beasts and Parasitic Beasts immense pain, rendering them unable to pursue the group.
Plus, Ian would occasionally pull out a Water Gun and sprinkle some water on the Magical Beasts behind them, instantly heating up the atmosphere, with roars and shrieks becoming even more fervent.
However, the number of Parasitic Beasts was truly impressive. Ian roughly estimated there were about thirty to forty of them—of which only a few were Magical Beasts. Nevertheless, these were fearless of Yisen Gard's attacks, even capable of withstanding the corrosion brought by the Corrosive Flame, posing a threat greater than all the other beasts combined.