Yuan Ci, the elder, also knew about the Purple Vine's secret treasure, and it didn't surprise Zi Di.
But combining her own ambush and the arrangements of the empire's spies in the Purple Vine Shop in the Royal Capital, she had another hypothesis!
Why would the empire's spies exert so much effort to make arrangements in the Purple Vine Shop in the Royal Capital? The Teleportation Array they set up was of an extremely high specification, capable of both teleporting and concealing one's aura, and it definitely wasn't cheap to construct.
And to reach the Alchemy Laboratory in the Ten-thousand-year-old Ice Lake, there were Golden Level fighters on guard all year round.
Golden Level!
That was by no means an ordinary level.
In any force on the Main Plane, it was considered a core Transcendent level.