It was impossible for the three of time to directly research each other's special technique directly. Even if Wang Zheng wanted to do so, Lie Xin and Achilles would probably not agree to it, since for them these were family traditions that were passed down in secret and they did not have the right to share them. However, they were still able to exchange pointers when it came to combat itself.
Lie Xin's transcendence definitely left the other two speechless. The fury of her flames had already reached a point where they could utterly destroy others. This was fast approaching the final stage of the Lie Flame Technique. With raging flames that engulfed the skies, there would be total destruction.
From the point of view of other special techniques, such a progression would have been unbalanced. The further down this path one went, the more dangerous it would be. However, this was somehow fine for the Lie Flame Technique. Every family had their own secrets after all.