Sea Heart Flame

The Sea Heart Flame is a deep-blue Heavenly Flame first wielded by Han Feng, later used by Old Mu Gu, and finally extracted and refined by Xiao Yan. It serves both combat and alchemy, taking forms such as waves, fire armor, snakes, and cauldron flame. Its custody changes through violent transfer rather than a clear chain of voluntary gifts. (Chapters 599–644, 860–1196, and 1487–1497)

History

Han Feng's difficult refinement

Han Feng obtains the Sea Heart Flame only after nearly losing his life, then suffers again while swallowing and refining it. His incomplete Flame Mantra does not fully suppress the flame, which sometimes revolts inside him. The result is nevertheless central to his power: he uses its deep-blue fire for alchemy, defense, movement, and attacks, and its status as a Heavenly Flame supports his authority among Black-Corner Region factions. (Chapter 599)

During the struggle for the Fallen Heart Flame, Han Feng wraps himself in Sea Heart Flame to resist otherwise debilitating invisible heat. He releases it from different parts of his body to defend at close range, forms sea-like waves and flame weapons, and uses it while contesting Xiao Yan's Green Lotus Core Flame. The two men also recognize that a refined Heavenly Flame can be removed by force only when its wielder can no longer resist, with grave or fatal consequences for that wielder. (Chapters 604, 608, and 634–640)

When Xiao Yan destroys Han Feng's body, Han Feng escapes as a soul and remains associated with the flame. Hall of Souls intervention removes the surviving soul and its Heavenly Flame from the battlefield. The corpus does not depict a voluntary transfer from Han Feng; it next identifies Old Mu Gu as the wielder. (Chapters 642–644, 860, and 868)

Old Mu Gu's alchemical flame

Old Mu Gu uses the Sea Heart Flame during the Pill Gathering era and while competing for the Three Thousand Burning Flame. At the Pill Gathering, its appearance disrupts nearby ordinary flames strongly enough to cause several cauldrons to fail. He shapes it into a fire snake around himself and then uses it inside his medicinal cauldron. Xiao Yan's merged Glazed Lotus Heart Flame can intimidate and suppress it, demonstrating that the Sea Heart Flame's authority over ordinary flames does not make it superior to every other Heavenly Flame. (Chapters 1150–1152, 1174, 1181–1182, and 1196)

Forced extraction and refinement by Xiao Yan

Years later, Xiao Yan encounters Old Mu Gu in a Hall of Souls branch. He shatters the azure flame protecting the man, restrains him, and uses suction to pull the Sea Heart Flame from his body. Old Mu Gu's aura weakens from the extraction, and Xiao Yan then kills him when he attempts to self-destruct. This is a forcible seizure, not inheritance or consent. (Chapters 1487–1488)

Xiao Yan immediately swallows the extracted flame and soon refines it into his multi-flame system. At his Dou Sheng level, the refinement yields only a small cultivation increase and moves his Flame Mantra to low Tian class rather than producing the dramatic gains of his early Heavenly Flames. Its tactical value is still substantial: it gives him five genuine Heavenly Flames for the Five Ring Flame Expelling Technique and a five-colored Extermination Fire Lotus. (Chapters 1488, 1491–1492, and 1497)

Abilities and properties

• Deep-blue, fluid forms: The flame repeatedly behaves like seawater, rolling into waves or a sea of fire and taking the shape of snakes, armor, and weapons under its wielder's control. These forms make it suitable for broad-area pressure as well as close defense. (Chapters 604, 608, and 634–640)
• Heat resistance and defense: Han Feng uses it as a protective layer against the Fallen Heart Flame's ambient heat and can rapidly concentrate it at an attacked point. This protection is not absolute; attacks and stronger Heavenly Flame combinations can penetrate or suppress it. (Chapters 604, 608, 638–640, and 1181–1182)
• Alchemy: Both Han Feng and Old Mu Gu use the flame for pill refinement. Like other Heavenly Flames, it offers heat and control beyond ordinary or beast flames; at the Pill Gathering, its pressure destabilizes nearby lesser flames before Xiao Yan's stronger merged flame forces it to retreat. (Chapters 599, 1150–1152, and 1181–1182)
• Combat applications: It can be projected in waves, condensed into fire creatures or weapons, and layered over the body. The corpus demonstrates force and flexibility, but does not assign it a unique internal-heart effect comparable to the Fallen Heart Flame. (Chapters 604, 608, and 634–640)
• Compatibility through the Flame Mantra: Han Feng's incomplete method leaves the flame imperfectly suppressed and prone to revolt. Xiao Yan's developed Flame Mantra instead incorporates it alongside four other genuine Heavenly Flames and supports combined formations. The difference is a property of the users' methods, not proof that the flame itself changed category. (Chapters 599 and 1488–1497)

Ownership and custody