strange accident in an underground parking lot in China

In an underground parking lot in China, a video shows a surprising accident. A car moves forward normally, then collides with a person lying on the ground, invisible at first glance. The scene is intriguing: why was someone sleeping there, and how did the driver not see anything? Several witnesses then appear, looking equally astonished. The incident has yet to be officially explained, but the images are circulating widely on local networks. The authorities are trying to understand how such a situation could have arisen in such a closely-guarded area.