Thirst for Wisdom

It was peak hour, and the parking lot was almost full. There was only a narrow space left for one car to park.

Fortunately, Lu Chen was quite skilled, and coupled with the fact that the security guard gave the command, the car stopped.

However, Lu Chen's Audi was not far from the other two cars. Lu Chen carefully opened the car door and squeezed out.

Lu Chen was worried that the car beside him wouldn't be able to get out, so he put a sign that said 'car call' on the windward glass. Once that happens, he can immediately get out and move the car to make it convenient for other cars to get out.

Then Lu Chen, Ye Yundan, and Fu Zhenxin stood by the roadside, waiting for the others to arrive.

Fu Zhenxin looked at the time and said to Ye Yundan, "Sister Dandan, why don't you go in and take a look. Maybe they've already arrived."

Ye Yundan pondered for a moment. "How can he be so fast?!" He definitely wasn't there!

How can you be so sure?