Wen Li personally took charge, without altering any of the existing clues inside the factory, but added a few tattered diaries and strange codes, turning the original graffiti by the factory employees into a treasure map.
To make the storyline plausible—at least not obvious as a show gimmick—he found a suitable reason for this treasure.
Initially, the food processing factory went bankrupt and owed wages to the employees, so the boss allowed the employees to take anything from the factory as their wages. However, this boss was quite cunning, having already packed away valuable items beforehand, leaving only the equipment and furniture that had been used for years and unsold stock.
