But in that era, there was no heating. Although they lived in dorms with earthen beds, they couldn't start a fire until they were frozen to a certain degree because firewood was supplied in limited quantities. Thus, before winter set in, the warriors spent a great deal of time chopping wood, just to ensure they had firewood for the entire winter.
Otherwise, when Zheng Long first arrived, he would have caught a cold from the freezing temperatures, barely making it through with his resilience and "space water."
When Zheng Long arrived, it was already mid-March. If he had come in November, he probably would have frozen stupid, from a place of just below zero degrees to tens of degrees below zero. It's no wonder that many new warriors couldn't stand it and caught colds right after arriving.
