A phone number that doesn't change should logically help locate someone, but that requires significant technical capability.
For Gao Yang, if he needs to, he can easily locate a number in Ukraine, but that only works if he has enough local power.
In another country, like America or the United Kingdom, Gao Yang couldn't use the police or communication departments to track a number. However, as long as he has the number and enough money, it's not impossible to find the desired target.
So, Brian providing a phone number that surely wouldn't change is truly valuable, much more so than the address Djo bought at a high price from Justin.
"Indeed, it's enough. Please give me the phone number, thank you."
"Remember the number."
Gao Yang noted down the number Brian gave on a small notebook, then quietly said, "Okay, I've written down the number."
"You haven't told me what to do with that Jefferson yet. Do you want him?"
