Hunting lizards.
After she planned everything, Zhi Rui marked the place she was in. A forced the digging rats to memorize it by the drawing she did on the ground. As they were tamed beasts it was an easy task.
Back on the surface. Zhi Rui closed access to that place. She spread fifty different passages ways near there but closed five and another fifteen she did a really good job covering it all up, but after everything was done in the last place, the true place. Zhi Rui dug a whole above it and put ancient scrolls that would send most of the high tiers clans into a frenzy.
In case someone found those, chances are that they would bother to look around more.
She went to absurd lengths to his that place. She picked up the ancient beasts bone and showcase it for everyone, so as to not create any curiosity as to why she was there.
After settling the matter, Zhi Rui started the first step.