The Ice Abyss is cold both day and night, but when compared, it is even colder during the day.
The low temperatures during the day are secondary; the key issue is the cold light emitted by the cold sun above, which is extremely invasive to skin membranes. Before the human skin membrane is formed, exposure to the cold sun means instant death.
During the war, the Northern Five Towns dare not declare a complete lockdown of their territories. However, key towns directly governed like Baimu City and important large strongholds are basically in a state of closure. Activities like gathering, hunting, and transportation have all ceased.
Intelligence is the key to determining the outcome of the war. This principle is understood not just by Great Xia but by the Northern Five Towns... no, it should now be the Northern Four Towns, and they of course understand this too.
