Xiao Tian still had not said anything and only stared at Crystal.
Lan Ruoxi said it was dangerous to tell everyone that he had gained insight about battle instinct because they would know he was a candidate for the Ruler.
Lan Ruoxi had told him that there would be a high chance that they would try to kill him if they found out that he had gained insight about battle instinct when he was still at the mid-level master stage.
Sure, it could be said that Xiao Tian was nearly invincible against martial artists at the master stage. But he was nothing to martial artists at the grandmaster stage, especially for the mid-level grandmaster stage or the high-level grandmaster stage.
For this reason, Lan Ruoxi told him to hide it until he was strong enough to protect himself. This was what made Xiao Tian unable to say anything to Crystal.