He had heard from storytellers that using human hearts to concoct medicine could cure all diseases. It's conceivable that someone could be so heartless, willing to dig out hearts to cure an illness.
Fan Shizhong's face was stern as he said, "The murderer is so ruthless. Regardless of the reason, we must catch him as soon as possible! Investigate thoroughly and leave no stone unturned!"
The constable promised earnestly and sent people to inquire around the neighborhood, hoping to find any traces left by the murderer.
As soon as the neighboring households were questioned, they turned pale with fright. "There's no murderer! It's a demon, a heart-digging demon!"
Fan Shizhong and the constable were both taken aback.
The elderly lady, still terrified and trembling, insisted, "I heard it! It was a demon! Sir, you must believe me!"