Does the owner have the right to tear down the things left on the stairs?

Stairs are fire exits and no individual or unit has the right to occupy them.

The demand of the property management company in the service contract has been made clear, and it is necessary to ensure the smooth flow of fire exits.

If the owner is notified to clean up the property by himself, the owner will not implement it.

Property companies have the right to clean up.

In the event of a fire accident, any individual or unit that obstructs the fire escape will be punished by law. You'd better not joke about your neighbor's life for privacy.