Gu An is not only watching the Celestial Emperor but also observing the mindset of those high above, the Celestial Dao Venerables.
The Celestial Dao Venerables are elusive and ephemeral, even the Heavenly Court Immortals rarely see them, yet they are a crucial part of the Heavenly Court, its foundation. Whenever the Celestial Emperor purges the Heavenly Court, he leaves a lifeline for those with great merit, and the Celestial Dao Venerables are such.
In the Heavenly Court, the status of the Celestial Dao Venerables is on par with the Celestial Emperor, and they do not need to take on Immortal Positions, hence they are truly carefree. However, they are bound to the Celestial Dao Destiny and cannot let the Heavenly Dao be harmed.
Sure enough, those Celestial Dao Venerables also feel uneasy, with some even more anxious than the Celestial Emperor, already starting to deploy means to gather more intelligence.