"Rest assured, I won't easily agree to join forces with Heavenly Palace. The easier I make it sound, the less they'll trust me. That's why I'm going to keep bargaining with them and pretending to hesitate."
Ye Huan was simply fooling Tian Zang. Naturally, he couldn't tell the truth—that he had no intention whatsoever of acting as a mole for Heavenly Palace. Everything he said was merely a ploy to gain access to the secret chamber.
His real goal was to use the secret chamber as leverage: forcing Heavenly Palace into a position where they wouldn't dare kill him, while compelling them to teach him how to cultivate the Dao of Time.
Chapter 1060