"Daoist Fang, allow me to consider for a few days before I give you a reply." Jia Ren was skillfully using delaying tactics to avoid being entangled by Fang Wu.
He had no desire to help others make stone houses look old, as it was laborious and fraught with considerable danger.
The trouble that had come to his door earlier was an act of desperation he couldn't have avoided.
Continue cooperating in making stone houses look old?
Earning Spirit Stones was important, but safety was paramount.
He naturally wouldn't risk his life just to earn Spirit Stones.
After sending Fang Wu away, Jia Ren entered the tunnel through the stone house and arrived at the abandoned stone dwelling.
He sealed the tunnel and erased any traces to prevent his whereabouts from being exposed.
If Fang Wu came looking again, he would have a hard time finding the secret chamber underground and would likely assume that Jia Ren had fled.
However, Jia Ren didn't think this would guarantee his safety.