Of course, Gray Wolf wasn't asking them to find out specific information about the Tsar Group, but just to get some intel on which experts the Tsar Group has. Since the Tsar Group sent people to Wancheng, they wouldn't send a bunch of nobodies, at least they'd be top-notch experts, so investigating this aspect becomes much easier.
As long as the investigation reveals which experts are part of the Tsar Group, and then gets some information in Wancheng, it's enough to pinpoint who the Tsar people are by evening, the phone rang for Gray Wolf!
This call was from a distant friend of his, who introduced some of the key members of the Tsar Group. Although it was just simple information, it was very useful for identifying the Tsar people. For instance, Lin Mu wants to take revenge on the Tsar by heading to Russia, and Lin Mu is in the shadows. If the Tsar Group finds out about Lin Mu's competent subordinates, it becomes easier to verify the opponent.
