The chest
Cindy digs around the hard object. Slowly she can see the contours of a red metal chest. The chest is extremely heavy, so it costs Cindy quite a bit of energy to pull it out. A random stranger runs over to help her, thankfully without asking too many questions.
She tries to open the chest, but to no avail. There’s a padlock on it making it impossible to open. The padlock seems to unlock using a combination of four numbers. But what are the correct four numbers? The mystery wasn’t over yet… Paul hadn’t made it easy for her.
Then she thinks of something…