Ye Xuan's mind flashed with spiritual light. The Heavenly Technique had no Forbidden Techniques guarding it; it was clear that the Jade Emperor had intentionally left it there, his ultimate goal being to let him see it.
The underlying message was to tell Ye Xuan that his cultivation of the Heavenly Technique signified an undying existence, and it was also a kind of unique intimidation towards Ye Xuan.
Of course, the Jade Emperor was not afraid of Ye Xuan cultivating the Heavenly Technique, because it was the Heavenly Emperor's Technique, and it required the support of the Four Directions Dragon Seal for cultivation. With the Four Directions Dragon Seal in the hands of the Jade Emperor, even if Ye Xuan wished to cultivate it, it would fundamentally be impossible.