Annan followed the "teacher" out of the narrow and dim alley.
She looked up at the gray-white sky.
Annan could clearly see a layer of gray-white barrier high in the sky, resembling the frost that forms on the outside of a window during the deep winter morning dew.
On the outer side of that frosty shell, one could even vaguely see the ceaseless blizzard raging with the naked eye.
Annan knew that this was not the barrier set up by the grandmother to isolate curses, but the constant temperature barrier arranged by the Decree Wizards of the Tower of the Storm.
In the very center of a large city, there was a semi-automatic device called a Barrier Generator.
With the semi-automatically executed ritual spell formed by the Decree magic, the barrier that should have only lasted for three days could be extended indefinitely. As long as the materials were continually replenished, the barrier could be maintained without end.