A peaceful and uneventful night. The second morning, Ling Fei arrived in the Xing Chen Bay Residence, knocking on Lu Xuan's door.
"Come on in!" Lu Xuan opened the door of his house. He had been cultivating all through the night before, and only had three hours of sleep. However, he was alert and energetic, not at all tired.
That was because he had accomplished a small stage in cultivation. As his cultivation strength began to climb, he would eventually be able to do without sleep at all. At higher stages of cultivation, he could replenish his mental strength via other means.
However, that would be after he attained a very high level of cultivation in the future. At his current level, some sleep was still very much necessary and required.