The high-pitched robotic voice wasn't just heard by Jin Liwei and his employees at the main computer control room. It was heard throughout the entire Jin Corporation building via the PA system. It seemed that the first hacker didn't know exactly where his opponent was located.
Fortunately, it was already past midnight and most employees were gone. Despite this, there were still some people who heard it—the night cleaners and the few ones working overtime. When they heard the creepy high-pitched robotic voice, they were extremely frightened.
All that registered in their minds was the robotic voice. They didn't bother understanding what it was saying. Besides, not all of them could understand English. They just started freaking out.