Zhang Maodong’s expression turned solemn instantly. He motioned for Liang Song to close the door and then said, "Speak. What did you discover?"
Liang Song walked up to the desk and lowered his voice. "Sir, I found a hidden mark on the map. When exposed to ultraviolet light, it reveals a precise coordinate and a string of numbers."
Zhang Maodong’s eyes widened slightly, but he quickly regained his composure. He pondered for a moment before asking, "Are you certain this mark hasn't been discovered before?"
Chapter 267