On the Northern Continent,
A small wooden house stood tall on a cliff, making people think it was a shack. However, this house, which made everyone stay away, actually had a big secret underneath.
There was a tunnel right below the house, leading to the cave inside the cliff. In that cave, there was enough lighting, comfy furniture, and cultivation rooms, making it a nice base. This was the Spirit Nest's headquarters.
Greg found this special cave with his ability after Anna requested for a base. When the others agreed with this place, Greg started making the tunnel for this cave while the others made a run-down house to avoid anyone's attention. There was one entrance at the bottom of the cliff. Still, they blocked it to prevent anyone from noticing and made that shack to redirect other people's attention. They also made a secret entrance in case someone decided to investigate this house.
Anna was asking Ngina, who was stationed on the Willow Continent.