It was winter in the Peaceful Ocean when November was coming to an end.
The water in the Peaceful Ocean was different from normal water whereby it would not freeze easily even though the temperature dropped sub-zero. There would only be a thin layer of frost on the surface when it went below -30 degrees Celsius.
However, the deeper the ocean, the lower the freezing point of the sea water. Some investigators even found out that the lowest the temperature would go at the bottom of the Peaceful Ocean was -270 degrees Celsius.
At the moment, it was -20 degrees Celsius on the ocean. There was an ice fog covering the sea, making it seem like the entire Peaceful Ocean was draped in a white chiffon dress.
Even demigods usually dared not enter the Peaceful Ocean in such terrible weather.
One reason was that there would be a magnetic field interference in the ice fog which made one unable to set the coordinates and directions on their Emperor's Heart Ring.