When he eavesdropped on the conversation of the wandering mercenaries in the surroundings earlier, Tang Zhen had heard the words "Desert Platinum" from these people. His tone carried a trace of expectation that he could not suppress.
Their identity and attire proved that they were not locals, and their strength far exceeded that of other wandering mercenaries. At the same time, they were also very interested in the special Metals in the Starfall desert. As such, Tang Zhen had a chance to operate them.
As long as the other party came for the special metal and knew the information he wanted, Tang Zhen was confident that he could obtain it from them.
In fact, it didn't matter even if the other party didn't know. Tang Zhen's plan included finding a few natives to help him gather information. He would hide his identity as much as possible to avoid attracting the attention of people with ulterior motives.