The role of these people is singular: to block the Heavenly Tribulation no matter what when it appears.
They have been waiting here for a very long time, even anxiously, because they have been near this place ever since Ling Zhenfei began his alchemy.
At this moment, two people are sitting atop the mountain wall, both of whom are quite old, and they are staring intently at the Elixir Room.
One of them said, "The Palace Master instructed us to guard here, saying something about a Heavenly Tribulation. Does this look like a Heavenly Tribulation to you?"
The other person replied, "I don't see it either, but I have a very big question; it's quite strange, just what kind of Heavenly Tribulation is this?"
That person said, "Is that really a question? How many kinds of Heavenly Tribulations can there be? I reckon this is for helping a junior through the Heavenly Tribulation of Heart Chasing State."
