How do I to get to Peru?

Hint 1 of 5:

Have you talked with anyone lately about Master Lu's riddle?

Hint 2 of 5:

The guy at the Hall of Classics was kind of helpful.

Hint 3 of 5:

But talking to Baron Otto Von Seltsam was a dead end.

Hint 4 of 5:

What about the new Baron?

Hint 5 of 5:

Did you talk with him about Master Lu's puzzle?