At 5:10 p.m., the BMW left Gao Chao's bar.
Wang Yu drove, with Tiger Cub sitting in the passenger seat, and another underling in the back.
This underling was randomly selected from the twenty brought over by Wu Tianming; Wang Yu's reason for bringing him was simple—he wanted to ask him a few questions, including when Wu Tianming had arrived at the bar.
The timing of Wu Tianming entering the office was very coincidental, just after Wang Yu had finished deploying his plan, making Wang Yu have to consider whether Wu Tianming had overheard his arrangements.
This issue was very important to Wang Yu and also determined how suspicious Wu Tianming was. If Wu Tianming had already been there for a while, it would mean he eavesdropped outside the office, otherwise, there was no reason for him not to enter the office directly.