Boundary Sea

Biodata

Cosmology

• Birthplace of worlds: Lesser Worlds, Spirit Realms, and worlds of higher levels all originate from the Boundary Sea 383.
• World distribution: Worlds appear as widely scattered spheres. Some are joined by passages, forming paired or multi-world configurations 391 453.
• Realm Walls: A world’s outer barrier keeps Boundary Sea power from invading and protects the conditions necessary for life and development 392.
• Continuing expansion: The Boundary Sea steadily encroaches on the remaining immortal realms. The Great Desolation Immortal Realm, once able to shelter other beings, has increasingly been forced to prioritize its own survival 465 467.

Geography

Known Environmental Regions

Ning Qi’s perception passes through the Gray Mist Zone, Blackwater Region, and Turbulent Flow Region when he follows a connection toward the Boundary Sea’s depths 430.

Regional Divisions

• Extreme East Boundary Sea: The broader region containing Ning Qi’s home sector and the Great Desolation Immortal Realm 465.
• Sector 15: Identified by officials beyond Sage Ancestor’s Immortal Gate. Ning Qi and Sage Ancestor initially do not recognize the designation 469.
• Outer and core areas: The True Martial Spirit World lies on Sector 15’s outskirts. Ning Qi explains that worlds moving nearer the core can become subject to Immortal World battlefield assignments 589.
• Mapped neighboring sectors: Lin Chen possesses a projected map covering Sector 15 and several adjacent regions 496.

Energy and Rules

Spiritual Energy and World Growth

Boundary Sea Spiritual Qi is chaotic and disordered, but it supplies the external energy needed for a Lesser World to grow. Ning Qi proposes filtering it through a world’s existing Spiritual Qi or having cultivators refine it directly 238.

• Rule Sources: Hidden throughout the Boundary Sea. A Lesser World that acquires and integrates a Rule Source can become a Spirit Realm 246.
• Difficulty of collection: Natural Rule Sources are obscure and difficult to locate. Ning Qi instead uses orderly Rules obtained elsewhere as foundations for drawing corresponding power from the sea 246.
• Five Elements Divine Chains: Ning Qi places these outside the True Martial World to extract the Power of Rules and replenish its Rule Sources 301 360.
• Direct harvesting: His sword techniques eventually allow him to cut away portions of the Boundary Sea’s Rules and integrate them into his world 284 290.

Protection of Lesser Worlds

• Restricted descent: Knowing a Lesser World’s coordinates does not allow an Upper Realm to freely send overwhelmingly powerful cultivators into it. The Mysterious Turtle attributes this protection to the Boundary Sea Rules 212.
• Anchor-point methods: Life Poison can weaken a Lower Realm and establish internal anchors. Dao Seals formed through affected experts help open a World Passage from both sides 212.
• Passage limits: Such a passage still restricts entrants to cultivators below the Lesser World’s strongest combat power 212.

World Sea Energy and Immortality

Limitless Evil Qi

• A legendary destructive power associated with the Boundary Sea, capable of threatening a Spirit Realm’s birth and destruction 372.
• Ning Qi uses it to eliminate Twisted Monsters, making it a crucial countermeasure against creatures that can otherwise reform or transform their victims 443 446.
• Immortals react to it even more strongly than to ordinary World Sea Energy; Sage Ancestor experiences an instinctive urge to attack Ning Qi when exposed to it 463 474.

Inhabitants and Hazards

World Sea Ferocious Beasts

• Native beasts inhabit territories throughout the Boundary Sea. Those entering the newly formed War Domain include creatures comparable to Void Dao and Body Integration cultivators 302 383.
• Known examples include the Bee Demon Queen Feng Baihua, a black flood dragon, and tiger-, leopard-, wolf-, lion-, and eagle-like beasts subdued by Ning Qi 383.
• The War Domain offers a relatively stable environment that beasts reach from the chaotic sea, sometimes interfering with its territorial nodes 306.
• Much stronger specimens also exist: three beasts encountered during the inheritance expedition possess Taiyi Golden Immortal-level strength 739.

Twisted Monsters

• Lurk in unusual regions, including vortex-like Twisted Spaces 383.
• Can recombine after being cut apart. Monsters fought by Ning Qi and Zhao Yujun reform into ten creatures more than twenty times stronger than before 383.
• Can devour cultivators, transform them into their own kind, and grow stronger through the process 443 446.
• Can expose a world’s location to terrifying beings in the Boundary Sea. Sage Ancestor’s summoned monster army consequently threatens the True Martial Spirit World as well as its intended target 442.
• According to the Black-Haired Donkey’s mother, killing them inflicts a curse that makes nearby seawater boil, especially near deeper black water. The donkey does not observe this reaction around Ning Qi 393.

Boundary Beasts

Zhao Zhirou distinguishes two kinds of enormous, meteorite-like Boundary Beasts encountered near the Boundary Sea Graveyard 612.

• The two kinds belong to different clans and fight to the death when they meet 612.

Other Dangers

• Battle disturbances: Fighting can attract creatures from the surrounding sea. Sage Ancestor warns that battling outside the War Domain could endanger even himself and Sea Ancestor 391 478.
• Ruins and wreckage: Abandoned sites may contain Twisted Monsters, powerful corpses, traps, and concealed passages 749 751.
• Hostile cultivators: The self-described Death Warriors of the Boundary Sea capture people to refine into their army 587.

Travel and Navigation

Notable Locations

Story Role