This was a form of compromise; the Lord needed the plant manager to do work for him, and the plant manager needed something to threaten the Lord, a leverage for his own protection. Thus, the existence of the ledger was inevitable; hence, the Lord simply gave him a safe that was impossible for an ordinary person to open.
Unfortunately, this ledger was originally meant as a fallback for him, to prevent the Lord from killing the donkey once it finished grinding the wheat. But unexpectedly, it had now become his death warrant.
Jiang Lu was somewhat curious about how the security would conduct their search.
Jiang Lu didn't know what those instruments were used for, but they didn't seem like torture devices. Moreover, it wasn't a matter of getting a confession; they had to find out where the ledger was, which ruled out the possibility of forced confessions.
So how were they planning to test?
Jiang Lu had no clue.
Because the inspection was conducted in a storeroom.