C604 Searching the Dragon Group's Treasury!

How did Willett know where the Dragon Group's treasury was? As someone who was ready to cause a ruckus in the Dragon Group at any time, not only did Willett know every escape route of the Dragon Group from Barbara and Clay, he also knew a lot of things that he should not have known, such as where the Dragon Group's treasury was.

In fact, although the Dragon Group's treasury was mysterious