Safe House

Biodata

Feature	Value
Name	Safe House (安全屋)
Alias(es)	Mountain Cave Safe House; Black Black Spirit / Black Black Spirit Number 9 460 475
Species/Race	Artificial intelligence
Gender	Neutral
Affiliation	Yu Hong; Black Wind Camp 155 191
Occupation/Role	Refuge, self-sustaining base, mobile fortress, and exploration vessel
Status	Active 618
First Appearance	Yu Hong conceives it as a secure survival base 8

Power Progression

Stage / Realm / Level	Chapter	Notes
Mountain Cave foundation	9	Yu Hong and Little Stutterer locate a cave and construct its heavy wooden door over several days.
Reinforced entrance	18, 20	The Black Mark repairs and reinforces the wooden door and its locking bar; the door is further strengthened after a Big Hide attack.
Symbol Array defense	32, 38	Symbol Arrays are added to the door and assembled into a nine-board array disk; intruding entities are dispersed by the Safe House's firelight and arrays.
Expanded underground structure	91, 95	The entire Safe House is enhanced to add five planned compartments, harder moisture-resistant walls, an additional basement, and a gate fused directly into the mountain wall.
Self-sustaining residence	114, 123, 124	A Nuclear Motor and underground-river water system are integrated. The completed interior includes a main hall, three basements, stone sockets, long-term power, and running water.
Black Wind Camp defense	156, 172	The Black Wind Protection Grand Array becomes an automatic camp defense, later strengthened into a continuous wind-and-fire attack array with greater coverage and radiation storage.
Mobile Safe House	439	The Mountain Cave Safe House connects to the Black Light and moves under Yu Hong's command, leaving its former entrance completely merged into the surrounding stone.
Spirit Calamity concealment and healing	446–449	Golden Ancient Tree Sap grants a healing aura within the house. Its stealth arrays are upgraded into the Moving Light Grand Array and gain the Isolation State.
Super Might Light Special Alloy walls	451	The outer walls become Super Might Light Special Alloy, increasing structural strength elevenfold.
Black Black Spirit integration	456, 460	The Safe House merges with the Salvation Ark and is renamed Black Black Spirit, gaining the capacity to travel the Black River and other hazardous regions.
Endless Dragon Grade shell	505	Its walls reach Endless Dragon Grade, gain 1% automatic repair per hour, and acquire automatic stealth fusion with suitable environmental carriers.
Benado Level / Fusion Void State	569	Its outer walls gain immunity to damage below the Undying level and reduce stronger damage by 32%; Fusion Void State prevents detection by beings below the Celestial Human level.

History

Yu Hong conceived the Safe House after trying to seal Little Stutterer’s dilapidated village house against Black Worms. Its mold, stale air, poor water, and vulnerable structure made it unsuitable for long-term survival, so he chose a cave in the woods as the site for a safer base 8.

Working with Little Stutterer, Yu Hong built the first cave door from a dead tree and salvaged tools. He soon added a stove, smoke pipe, reinforced seals, Glowstones, Symbol Arrays, and supplies, steadily turning the cave into the Mountain Cave Safe House 9 11 18 32.

As the surrounding Black Calamities worsened, the Safe House developed from a defensible shelter into an enclosed residence with underground rooms, secure water, nuclear power, and room for storage, training, and future food production. Yu Hong ultimately achieved his goal of a home capable of operating for at least twenty years without immediate reliance on outside trade 91 114 123 124.

The Safe House later became the core of Black Wind Camp’s layered defenses, then gained mobility through its connection to the Black Light. After merging with the Salvation Ark, it was renamed Black Black Spirit and began serving as Yu Hong’s mobile base during journeys through the Spirit Calamity, Wind Calamity, Deep Place, and other worlds 303 439 456 460 522.

Appearance

The Safe House has no fixed exterior. Its original form was a mountain cave secured by a reinforced wooden door and viewing window; its later upgrades allow it to disguise itself as stone, cloud Qi, or an ordinary building, while its mobile form is known as Black Black Spirit 15 439 445 522 580.

• Its original entrance was a thick wooden door fused into the surrounding mountain wall after enhancement 95.
• The viewing window can be shuttered and disguised as a narrow dark gap 94 445.
• When linked to the Black Light, its original door and window can vanish into an ordinary stone wall 439.
• Its returned form can become a three-story black building capable of housing dozens of people in crowded conditions 522 593.
• Its interior includes a main hall, three basements, bedrooms, a cultivation room, bathrooms, warm water, and continuous lighting 123 564.

Abilities & Systems

Structural Defense

The Safe House combines reinforced construction, advanced materials, and layered formations to withstand threats far beyond ordinary shelters.

• Its early gate and cave walls were strengthened to resist physical impacts and prevent attackers from exploiting the connection between the door and mountain wall 93 95.
• The Black Wind and Black Fire arrays can continuously damage intruding Black Calamities; weaker Eerie Shadows and Evil Shadows are destroyed upon entering the defended area 38 174.
• Its documented protective layers include a modified Wind Fire Spirit Slaughtering Array, a Yingshan Civilization Symbol Array, and multi-layered strengthened material walls 303.
• Its Benado Level outer walls are immune to damage below the Undying level and reduce damage from stronger attacks by 32% 569.
• The walls endured thousands of blood-red saber strikes from Heaven Sun Sect cultivators without showing damage 572.

Concealment and Isolation

The Safe House can obscure its presence from enemies and environmental detection.

• Early camouflage concealed visual signs, odors, and some mental-radiation scans, but did not effectively hide tactile or sound-based traces 447.
• The Moving Light Grand Array improves all prior concealment arrays and can disguise the Safe House as cloud Qi or another suitable environmental feature 448 449.
• Isolation State absorbs aura fluctuations, sound, odor, touch, and other detectable traces while the Safe House remains stationary 449.
• Isolation State can operate for approximately one hour before accumulated sensations must be released elsewhere as an unusually conspicuous burst of sound, odor, and presence 449.
• It cannot be activated while the Safe House is moving or during extremely drastic environmental changes 449 461.
• Fusion Void State provides more complete environmental blending; entities below the Celestial Human level cannot detect it 569.

Mobility and Travel

Yu Hong can operate the Safe House through a mental connection to its internal light sphere.

• Its initial mobile controls function like a simple joystick, allowing it to drift slowly and subtly enough to avoid notice at range 448.
• After integration with the Black Light, it can detach from fixed locations and move through dangerous terrain 439.
• As Black Black Spirit, it can travel at high speed along the Black River and traverse the Wind Calamity through colored threads 459 522.
• Teleportation Array Arts allow it to cross vast distances and appear directly at selected destinations 594.
• Its movement can be forcibly restricted by sufficiently powerful spatial sealing techniques 538.

Self-Sufficiency

The Safe House was developed to minimize its occupants’ need to leave safety.

• A Nuclear Motor provides a documented power supply expected to last at least twenty years 114 124.
• Its water system is connected to underground rivers and includes room for future filtration and purification improvements 114 124.
• It contains dedicated storage areas, a fireplace, electrical appliances, food supplies, and protected living space 96 177 344.
• Its later interior provides separate bedrooms, a cultivation room, bathrooms, warm water, and continuous lighting 564.

Healing Aura

A healing field can cover the entire interior of the Safe House.

• The effect originates from Yu Hong’s Elven Ancient Tree’s Call trait after he uses Isna Golden Ancient Tree Sap 446.
• Injuries inside the Safe House visibly close and heal under the golden aura 446.
• The aura can also improve the condition of wounded allies brought to the entrance 472.

Automatic Repair

The Safe House can restore damage without immediate manual reconstruction.

• After reaching Endless Dragon Grade, it repairs 1% of its damage per hour, allowing complete recovery in approximately one hundred hours if suitable replacement material is available when needed 505.
• It underwent a full Black Mark repair after being heavily damaged by meteor impacts, restoring damaged areas and its formations 461 468.
• Interior handrails were added after the meteor disaster to prevent occupants from being thrown through the cabin during violent impacts 472.

Relationships

• Yu Hong — Creator, owner, primary operator, and the source of nearly every major enhancement. He continually expands the Safe House’s defenses, systems, and mobility 8 91 439 569.
• Little Stutterer — Yu Hong’s first collaborator in establishing the Mountain Cave Safe House; she provides tools and helps gather materials during its construction 9.
• Black Wind Camp — The Safe House becomes the camp’s inner refuge and the foundation for its layered defensive arrays 156 191 303.
• Black Light — The Safe House connects to the Black Light to gain operational mobility and leave Black Wind Base 438 439.
• Salvation Ark — Merges with the Safe House, producing the mobile vessel known as Black Black Spirit 456 460.
• Yi Yi — Long-term resident who maintains the interior and remains within the Safe House when her condition prevents her from entering other environments safely 447 456.
• Ku Chan — Resident and companion during the Spirit Calamity expeditions; he helps observe threats, recover inside the house, and operate alongside Yu Hong 445 448 461.
• Quan He — Companion and resident who later receives her own bedroom and cultivation room within the Safe House 564.