Gao Yang waited in Sana'a for two days to handle their withdrawal matters.
Intelligence sharing is really just a matter of a phone number. Gao Yang is willing to provide intelligence to Sergei because, in a certain sense, it means he influences or even controls Sergei's actions.
For instance, if Gao Yang wants to strike a target, he can completely hand over detailed intelligence to Sergei, and if Sergei hits the target, he also achieves his purpose. It's a win-win situation.
Establishing a communication system requires some considerations. Firstly, one must ensure that the person communicating, Sergei, cannot reverse trace the call, even though the probability of such an occurrence is low, but it must be guarded against.
On the afternoon of the third day after Gao Yang's arrival in Sana'a, as he was discussing matters over the phone with Yake, Joseph suddenly knocked on his door and then whispered outside, "Boss, Dmitry and his team have arrived and will soon be here."
