*This is a group game. Anyone can respond, but the first action number replied will be used.
Round 4:
You focus your attention on the banner, examining it closely for any hidden messages. As you study the intricate designs of the key, you notice that some of the lines seem to form a pattern. It appears to be a series of numbers: 7-15-21-4-9-14-7. What could these numbers mean?
Options:
1. Try to decipher the meaning of the number sequence.
2. Share the number sequence with the security guard and ask for their input.
3. Proceed to the main exhibition hall to continue your search.