"Activate the Twilight Sequence," Li Fei ordered softly.
In an instant, the lighting throughout the entire Residential Area began to shift subtly.
The angles of light and shadow cast across the buildings gradually lengthened, the temperature dropped slightly, and the breeze system activated, bringing a hint of evening coolness.
In the distance, several simulated streetlights lit up one after another, casting warm halos of light.
Everything was controlled by the headquarters' core Yin-Yang Five Elements Array, one of Li Fei's proudest research achievements.
Not only did it perfectly replicate the surface world's day-night cycle, it could also simulate seasonal changes and different weather conditions.
Today might be bright and sunny, while tomorrow could bring a drizzling rain, all carried out according to real weather data from the External World.
"Sect Master, dinner is ready."
A Clone walked over and spoke respectfully.
Li Fei shook his head. "I'll go check on the Spring of Life first."
Passing through the Residential Area, Li Fei arrived at the headquarters' most central location—the Spring of Life.
It was a half-natural, half-artificial Underground Lake. Its lake water shone with a faint golden hue, and at its center grew an enormous Golden Willow Tree, the progenitor of all Golden Willow Branches.
Twelve stone pillars stood in a ring around the lake, each carved with ancient runes.
Those runes emitted a faint glow in the darkness, echoing the Life Energy rising from the lake.
Li Fei removed his outer robe and stepped into the lake water.
Warm energy immediately enveloped his entire body, sweeping away all his fatigue.
He closed his eyes and sensed the condition of the entire headquarters.
The location of every Clone, the operational state of every device, and the direction of every current of energy all appeared clearly within his awareness.
This was