Looking at Green's reaction, one could tell that this sonar fingerprint was something incredible, an extremely, extremely prestigious item.
So, the question arose.
What is a sonar fingerprint?
"Alright, I tentatively agree to these exchange terms, but I need to consult with a professional to see if the trade amount is appropriate. We'll be in touch later."
After hanging up the phone, Gao Yi immediately asked Green, "What is a sonar fingerprint?"
"A sonar fingerprint is a colloquial term. It refers to the performance signature of submarines during sonar detection. Submarines differ in tonnage, shape, and propulsion methods, so... if you have no understanding of submarines, or even what sonar is, it's going to be hard for me to explain it to you."
"Is this intelligence valuable?"
"Valuable?"
