There is no wall that does not let the wind through, and it is very difficult—nigh impossible—to completely hide the commotion that occurred in the botanical gardens without the outside world getting wind of it.
Shoppers nearby, upon hearing the noise, thought there was an earthquake and were scared into hiding under tables, pulling out their phones to make calls to their families.
However, after a while, they realized the buildings were still intact, yet they felt intermittent tremors.
When they ran out of the shopping center, they quickly discovered that the vibrations and the explosive sounds were coming from the botanical garden.
So, some began to call the police. The officers wanted to rush into the botanical garden but were shocked to find that, although its gates were wide open, there seemed to be an invisible barrier that no matter what they tried, they just couldn't breach.
