Face-slapping demon

The Zheng family's yard is as big as several football fields, with attics and small buildings everywhere. Even Zheng Xiulan, who has lived there for several years, may not be able to recognize all the places. She has never been to some hidden little houses or cellars.
And now Craven wants to find a place to store medicinal materials in the Zheng family. How easy is that?
"Mr. Craven, are you sure you want to do this?"
Zheng Yanping smiled slightly, and the only worry in his heart disappeared...