Heavenly Flames, called Yi Huo (异火), are rare fires formed by unusual natural or spiritual conditions in Battle Through the Heavens. They are ranked because different flames have different scarcity, properties and destructive potential, but rank is not the only factor in a fight. Control, cultivation level, compatibility, technique and whether several flames can be combined safely all matter. Xiao Yan uses Heavenly Flames for combat, alchemy and the evolution of his Flame Mantra, while specific flames connect him to Medusa, the Tagor Desert, Jia Nan Academy and Yao Lao.
Key Heavenly Flames in Xiao Yan's early and middle story
This is a relationship guide, not a claim that one flame's numerical rank automatically determines every battle outcome.
| Flame or concept | Chinese name | Primary connection | Story function |
|---|---|---|---|
| Heavenly Flames | 异火 | World power system | Defines the ranked family of rare natural fires |
| Green Lotus Core Flame | 青莲地心火 | Xiao Yan, Medusa and Tagor Desert | Connects flame acquisition to evolution, territory and political conflict |
| Fallen Heart Flame | 陨落心炎 | Jia Nan Academy and Xiao Yan | Acts as both cultivation infrastructure and containment threat |
| Bone Chilling Flame | 骨灵冷火 | Yao Lao | Represents his elite alchemy knowledge and personal flame history |
| Flame Mantra | 焚诀 | Xiao Yan's cultivation method | Evolves by absorbing flames and makes collection structurally important |
| Combined flame attacks | Multiple flames | Xiao Yan | Convert controlled incompatibility into exceptional destructive force |
Named flames and the people or institutions connected to them
Each relationship describes what the story establishes, without treating proximity as identity or romance.
Xiao Yan萧炎
Protagonist, alchemist and Heavenly Flame wielderHis recovery and progression connect every major early character, cultivation system and story event in this cluster.
PersonYao Lao药老
Xiao Yan's mentor and alchemy teacherHe turns Xiao Yan's apparent decline into a disciplined path built on training, alchemy and strategic judgment.
PersonMedusa (Cai Lin)美杜莎(彩鳞)
Snake-People queen and major combatantHer evolution and the Green Lotus Core Flame bring her into a changing relationship with Xiao Yan.
ThingGreen Lotus Core Flame青莲地心火
Named Heavenly FlameIts desert arc connects Xiao Yan, Medusa, the Snake-People Tribe and the risks of flame absorption.
ThingFallen Heart Flame陨落心炎
Named Heavenly FlameIts relationship with Jia Nan Academy shows how an institution can use and fear the same cultivation resource.
OrganizationJia Nan Academy迦南学院
Cultivation academyThe academy expands Xiao Yan's peer network and becomes the institutional setting of the Fallen Heart Flame arc.
Heavenly Flame is a category, not one object
The term Heavenly Flames refers to a family of rare fires rather than one universal flame that changes color. Each named flame has its own origin, behavior and relationship network. Treating every blue, green or white fire effect as the same entity removes the distinctions that make the system useful.
English translations may use Heavenly Flame, Heavenly Fire, Strange Flame or Essence Flame. XianLore uses Heavenly Flames as the primary English label and keeps Yi Huo and the Chinese term 异火 as aliases so readers from different subtitle communities reach the same definition.
Why the flames are ranked
The ranking communicates scarcity, reputation and broad power. It gives cultivators a shared vocabulary for resources that are otherwise difficult to compare. Yet the list does not function like a guaranteed tournament bracket. A poorly controlled high-ranked flame can be less useful than a lower-ranked flame mastered by a stronger and more experienced cultivator.
Rank also creates desire and danger. Information about a flame can draw alchemists, sects and rulers into the same territory. The search for power therefore changes local politics long before anyone completes absorption.
Green Lotus Core Flame: desert, evolution and collision
The Green Lotus Core Flame forms the center of a major Tagor Desert network. Xiao Yan seeks it as a cultivation and alchemy resource. Medusa seeks its power for a dangerous evolutionary transformation. The Snake-People Tribe must consider what that transformation could mean for survival and authority.
This is why the flame should never be cataloged as a decorative green effect. Its complete identity includes a named place, competing claimants, an evolution event and consequences that continue through Xiao Yan and Medusa's relationship.

Fallen Heart Flame: power inside an institution
The Fallen Heart Flame is closely connected to Jia Nan Academy. Its effect can support cultivation, so the academy's training infrastructure benefits from containing a power that is never completely passive. The same resource that helps students progress can become a threat if control fails.
That relationship makes the flame more than a collectible on Xiao Yan's list. It demonstrates how institutions build systems around rare powers, then become dependent on the very thing they fear losing. Xiao Yan's involvement changes both his own cultivation and the academy's balance.
Yao Lao, Bone Chilling Flame and alchemy
Yao Lao's association with the Bone Chilling Flame helps establish his standing as an elite alchemist and explains why he can teach Xiao Yan about flame control. A Heavenly Flame is valuable to alchemy because heat must be powerful, precise and responsive rather than merely destructive.
The teacher's role matters because absorption is not a heroic act of willpower alone. Preparation, medicinal support, cultivation method and accurate judgment determine whether contact becomes advancement or death. Yao Lao provides the technical framework that turns Xiao Yan's ambition into a survivable plan.
Flame Mantra makes acquisition part of progression
Xiao Yan's Flame Mantra is unusual because it evolves through the absorption of Heavenly Flames. This creates a direct link between exploration and cultivation: finding a flame is not only obtaining an attack, but changing the method through which future power can develop.
The benefit comes with compounding risk. Different flames resist control and may conflict inside one body. Xiao Yan's later ability to combine flame properties is impressive because the system repeatedly establishes how unstable those energies can be.
Combat power and alchemy are different uses
In combat, a Heavenly Flame can add destructive force, unusual properties and the possibility of combined techniques. In alchemy, the same flame supports refinement, temperature control and the handling of rare medicinal materials. One spectacular battle scene does not represent the full value of the entity.
This dual function explains why alchemists can hold political importance beyond personal rank. A cultivator who produces medicine for breakthroughs or recovery affects entire networks of allies and institutions. Xiao Yan's flames therefore increase both direct force and social leverage.

Absorption is a controlled survival problem
A Heavenly Flame is not stored like a normal item after discovery. The wielder must approach, contain and integrate an energy capable of destroying the body. Preparatory medicine, cultivation strength, specialized methods and an experienced teacher can improve the odds, but none of them turns the process into a routine upgrade.
This risk gives each acquisition narrative weight. Xiao Yan's willingness to attempt absorption shows ambition, yet the preparation shows that he is not simply reckless. Success depends on enduring pain while maintaining enough control to prevent the flame from consuming the system meant to hold it.
The danger also limits imitation. Another cultivator cannot reproduce Xiao Yan's progression merely by locating the same resource. Different methods, constitutions and levels of guidance change what is possible, which is why ownership lists alone provide a poor explanation of the power system.
Combined flames and the problem of incompatibility
Different Heavenly Flames possess distinct properties and do not naturally behave as one harmless energy. Xiao Yan's combined flame techniques are powerful because they force incompatible forces into a temporary controlled relationship. The resulting attack can exceed what one flame would produce alone.
The same mechanism creates cost. Control can fail, preparation takes time and the attack may consume a large share of available energy. A high-impact scene should therefore be labeled with the technique and story context when known rather than summarized as Xiao Yan becoming permanently equal to every opponent it can injure.
For readers comparing rankings, combined techniques are an important reminder that a flame list ranks entities, not complete fighters. The wielder's method, realm, experience and tactical opportunity determine how much of a flame's potential becomes usable.
How flames connect characters, places and institutions
The Green Lotus Core Flame is inseparable from the Tagor Desert network because Medusa's evolution, Snake-People territory and Xiao Yan's search converge there. The Fallen Heart Flame is inseparable from Jia Nan Academy because containment and cultivation infrastructure shape its role.
Yao Lao's Bone Chilling Flame connects a named power to mentorship and elite alchemy history. Later flames connect Xiao Yan to larger factions and older conflicts. This relationship structure is more informative than a gallery where every fire image carries only a rank number.
It also improves internal linking. A reader entering through Xiao Yan can move to a named flame, then to Medusa or Jia Nan Academy, then to the relevant story event and reviewed wallpaper. Search engines receive the same clear subject relationships that human readers use to understand the world.
How XianLore labels flame images
A flame receives a specific name only when source, scene or unmistakable relationship evidence supports that name. Color is not sufficient. Adaptations stylize effects, lighting changes palettes and fan art often combines multiple visual motifs for impact.
When the character is confirmed but the exact flame is not, the safer label is Xiao Yan using flame power or Medusa in a flame-themed battle composition. That precision preserves search trust and leaves room to upgrade the record when episode, chapter or official promotional evidence becomes available.
Sources used for this guide
Qidian's official publication page anchors the original work, its Chinese title and source continuity. English names can vary across subtitles and translations, so XianLore keeps Chinese names and search aliases attached to each entity.
斗破苍穹Qidian · Official source-novel publicationBTTH FAQ
What are Heavenly Flames in Battle Through the Heavens?
They are rare naturally formed fires with distinct properties. Cultivators and alchemists value them for power, refinement and the special effects each flame can produce.
How many Heavenly Flames are there?
The source tradition presents a ranked Heavenly Flame list. Names and ordering should be checked against the relevant source continuity because subtitles and adaptations may reveal them at different times.
What Heavenly Flame does Xiao Yan get first?
The Green Lotus Core Flame is the first major named Heavenly Flame Xiao Yan successfully acquires in the central progression commonly followed by readers and donghua viewers.
Why can Xiao Yan absorb multiple Heavenly Flames?
His Flame Mantra evolves through flame absorption, while Yao Lao's knowledge, preparation and Xiao Yan's cultivation help manage the extreme danger. The process is never automatically safe.
Is a higher-ranked Heavenly Flame always stronger?
Rank indicates broad rarity and power, but actual results also depend on the wielder, control, cultivation level, technique, environment and compatibility.
Are Heavenly Flames cultivation realms?
No. They are rare powers and entities used by cultivators. A person still advances through the Dou Qi cultivation hierarchy.


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