Inside the communicator, every time a name is spoken, Hawkeye repeats it once. After Qian Cangyi estimates the record time, he repeats it again for confirmation. Of course, in reality, he does nothing, just stands there reciting names, gender, and positions.
The whole process is entirely an act, and even more terrifying is that the other side is completely unaware of this situation. Even if they can guess, they have no other choice but to compromise. Moreover, since Qian Cangyi needs to keep registering names, he has no time to inquire about the matters Hawkeye is concerned about.
If Hawkeye doesn't plan to note down the names, then whether it's wanting the high-level officials to survive or ensuring they must die, it's impossible to achieve. This means Hawkeye either plans to leave everything to fate or... leave none alive!