An ordinary act of picking up a fallen box at a grocery by a Chinese granny leads to serious consequences

A Question

However, one thing that we are missing out on is the falling of the box. The mysterious falling of the box is still unsolved. In the video, it is clear that there was no one around the shelf when the box fell down. The box fell down on its own which makes this incident quite weird and scary. So what do you think was it a demonic possession, fit, or just a planned act.