As for the lamppost, it is even more fierce. In many places, lampposts are made of metal and contain wires, and wires are also a kind of suffocation, called fire or magnetoelectricity, which will not only cause residents in the house to be nervous and grumpy, but also cause fires in serious cases.
It is suggested to put a glass of water to melt the electromagnetic brake, and put a convex mirror behind the water to block the brake.