Xu Yunxiao

Biodata

Feature	Value
Name	Xu Yunxiao (徐云霄)
Alias(es)	Blazing Dragon Douluo 15
Gender	Male 1
Affiliation	Sun Moon Empire; Xu imperial family 1
Occupation/Role	Crown Prince and de facto deputy emperor; later Emperor of the Sun Moon Empire and ruler of the united continent 1 15 257
Martial Soul	Purple Blazing Heaven Dragon 64 77
Highest Documented Cultivation	Level 99 257
First Appearance	Chapter 1, “The Imperial Grandson!” 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Peak Rank 89 Soul Douluo; peak Rank 8 Soul Tool practitioner	1	His starting level. Regarded as the strongest individual of his era on the Sun Moon Continent.
Level 93 Titled Douluo	15	Hunts a Hundred-Thousand-Year Dragon Pattern Whale with the empire’s experts and extensive Soul Tool support. Absorbing its Soul Ring and Soul Bone grants him the title Blazing Dragon Douluo.
Level 95 Super Douluo	15 40 62	The whale ring’s remaining energy is sufficient to carry him to Level 95; he is later explicitly confirmed at peak Rank 95.
Soul Core condensation	53	Enters seclusion to condense a Soul Core and subsequently emerges. Its attribute is not specified.
Level 97	77	Consumes the Ten Thousand Year Nine-Rank Ginseng King, advancing from Level 95 to Level 97 within three hours. He and Mu Mengyu also discover the possibility of Martial Soul Fusion.
Level 99	257	Breaks through alongside Xu Tianyang during the Sun Moon Empire’s takeover of Douluo Continent.

Background / History

Xu Yunxiao is hailed as the Sun Moon Empire’s most talented individual in a thousand years, excelling in both cultivation and Soul Tools. Under his leadership, the empire’s strength changes dramatically over thirty years, turning its long-standing rivalry with the Moonflower Empire into a campaign that brings its enemy to the brink of destruction 3.

Before his enthronement, the reigning emperor delegates enough authority to make him a de facto deputy emperor. The imperial court expects him to become the Sun Moon Continent’s first Titled Douluo and Rank 9 Soul Tool expert, then unify the continent 1.

His ambitions are shaped by the Evil Emperor’s repeated Beast Tides, which have devastated the continent’s strongest cultivators. After Xu Tianyang awakens Twin Martial Souls and Innate Full Soul Power, Xu Yunxiao hopes his son can eventually free the empire from this threat. He nevertheless feels pain and guilt over placing such a burden on a young child 3.

Appearance

• Wears magnificent clothing in his introductory scene 1.
• Has a stern expression, resolute eyes, and a vigorous bearing; his gaze is described as tiger-like 1 3.
• Appears more valiant and imposing after becoming emperor, though his severity softens around his wife and son 1 21.

Personality

Xu Yunxiao combines an imposing public manner with private affection. He can offer his son only a restrained “Not bad” during a reunion, yet openly celebrates his achievements, jokes with him, and worries about the pressure imposed by his talent. His closeness with Mu Mengyu allows them to understand one another through a glance 2 3 21 22 77.

He is ambitious, decisive, and willing to take calculated risks. Enthronement makes him more composed, but the prospect of both defeating Star Luo and securing resources for additional Titled Douluo rekindles his earlier appetite for daring campaigns 60.

His treatment of talent is pragmatic rather than rigid. He does not condemn Yang Yiyi merely for possessing a Devouring Attribute, instead insisting that she remain in control of her Martial Soul. He respects Yang Wudi’s combat and alchemical abilities, while rewarding Dugu Bo’s service with a title, residence, and support for his granddaughter 22 53 65.

Abilities & Skills

Purple Blazing Heaven Dragon

His inherited Beast Martial Soul possesses a Destructive Attribute. The imperial family maintains a complete cultivation inheritance for it 2 18.

• Uses its destructive power to retrieve Ten Thousand Year Profound Ice Marrow 18.
• Manifests a giant Purple Blazing Heaven Dragon during the assault on Star Luo City 66.
• Possesses nine Soul Rings: two yellow, two purple, four black, and one red 64.
• The red ring comes from the Hundred-Thousand-Year Dragon Pattern Whale 15.

Blazing Dragon Claw

Xu Yunxiao creates a massive purple claw shadow with a grasping motion. Against Yang Wudi, the attack inflicts pain that seems to originate in the depths of the soul 64.

• Overwhelms Yang Wudi’s fierce spear attack despite the latter’s exceptional offensive ability 64.

Gravity Control

A skill supplied by his Earth Dragon Crocodile left arm Soul Bone, obtained from the nearly fifty-thousand-year beast associated with his seventh Soul Ring 62.

• Forces Bai He downward under tremendous pressure.
• Immobilizes the Speed Clan and cracks the surrounding ground over a wide area.
• Allows him to suppress opponents without immediately killing them 62.

Fourth Soul Skill: Dragon Roar

His unnamed fourth Soul Skill releases a terrifying dragon roar 62.

• Incapacitates the assembled Speed Clan within three seconds.
• Leaves the victims alive, allowing his party to depart without further interference 62.

Soul Tool Engineering and Sword Combat

Xu Yunxiao is both a combatant and a Soul Tool innovator. He recognizes the military value of Xu Tianyang’s Hydraulic Forging Hammer and orders Mingde Hall to study and manufacture it; he also makes improved metal forging a top-priority research project 3 13.

• Creates a Level Nine Fixed Soul Cannon Shell used against Star Luo City 68.
• Wields the Dragon Emperor Sword, a half-step Level 9 Soul Tool, to release dragon-shaped sword qi 66.
• With Xu Tianyang’s support skill, his combat strength crosses the Level 96 threshold and his sword’s attack power approaches Level 97. These are temporary combat enhancements, not cultivation breakthroughs 66.

Martial Soul Fusion

After consuming the paired Ginseng Kings, Xu Yunxiao and Mu Mengyu sense compatibility between their Martial Souls and begin practicing fusion 77.

• Their fusion skill later contributes to deterring the injured Evil Emperor 123.
• They prepare to unleash it as a safeguard during their meeting with Qian Daoliu 141.
• Qian Daoliu identifies a wondrous connection between them and praises the solidity of their Soul Power 141.

Spiritual Attack

Xu Yunxiao kills an attacking Evil Eye Tyrant with a single spiritual ray while accompanying Xu Tianyang to confront the Evil Emperor 245.

• The attack protects his son but provokes the surrounding Evil Eye Tyrant Clan 245.

Equipment / Weapons / Items

• Dragon Emperor Sword — Half-step Level 9 Soul Tool that enhances his sword attacks 66.
• Earth Dragon Crocodile left arm Soul Bone — Grants Gravity Control 62.
• Hundred-Thousand-Year Dragon Pattern Whale Soul Bone — Absorbed alongside the beast’s Soul Ring during his advancement to Titled Douluo 15.
• Level Nine Fixed Soul Cannon Shell — His own creation; he orders it fired after Dai Tianfeng refuses to surrender 68.
• Ten Thousand Year Nine-Rank Ginseng King — Consumed to advance to Level 97 77.
• Vast Sea Cosmic Shroud — Obtained on loan from Heaven Dou for research as part of his diplomatic demands 41 42.
• Sunflame Engraving Knife — An imperial collection item ranked fifty-seventh on the Engraving Knife Ranking; he gives it to Xu Tianyang 13.

Relationships

• Xu Tianyang — His only son and eventual Crown Prince. Xu Yunxiao supervises his training, secures cultivation resources, and increasingly treats him as a strategic partner 12 16 58 154.
• Mu Mengyu — Wife, later empress, and commander of the Fire Phoenix Soul Tool Regiment. They share military responsibilities, parenting decisions, and a Martial Soul Fusion Skill 3 58 77 123.
• Xu Nianshuang — An orphan taken in and raised by Xu Yunxiao and Mu Mengyu, who arrange her engagement to Xu Tianyang. He supports her cultivation and recognizes her sword talent 11 12 16.
• Xu Sheng — His third uncle, childhood caretaker, and adviser in state affairs. Xu Yunxiao respects his counsel and accepts his warning against recklessness in foreign territory 28.
• Feng Tianxiang — Right-hand man and chief bodyguard. Assists with imperial business and teaches Xu Tianyang and Xu Nianshuang swordsmanship 12 13 63 92.
• Xu Chen — Cousin, trusted military marshal, Rank 87 Soul Douluo, and eighth-class Soul Engineer 58.
• Dugu Bo — Initially an opponent at Heaven Dou City, later an imperial ally. Xu Yunxiao rewards his protection of the empire and efforts against Evil Soul Masters 39 42 53.
• Yang Wudi — Recruited for the Breaking Clan’s fighting ability and alchemy. Xu Yunxiao backs Xu Tianyang’s negotiations and rewards Yang Wudi after he refines the Ninth-Grade Purple Gold Pill 65 98.
• Sky Dream Ice Silkworm — Accepts its continued existence after sacrifice once assured that it will not harm Xu Tianyang; values its knowledge and guidance 62.
• Evil Emperor — A longstanding threat whose Beast Tides motivate imperial preparations and later direct military action 3 111 245.

Story Role / Major Arcs

Xu Tianyang’s Awakening and Education

• Conducts Xu Tianyang’s Martial Soul awakening and tests his Innate Soul Power 1 2.
• Arranges the capture of a hundred-year Evil Eye Tyrant for his first Soul Ring 3.
• Enrolls him in Sun Moon Royal Academy with Mu Mengyu, both for his development and because the coming war prevents them from accompanying him 6.
• Later restructures the academy into separate Soul Tool and Martial Soul institutions 26.

Unification of the Sun Moon Continent

• Leads the final campaign against the Moonflower Empire, advancing on Moon Yao City after three surrounding fortresses fall 14.
• Becomes emperor of the unified dynasty and begins expanding Mingdu 15 20.
• Hunts the Hundred-Thousand-Year Dragon Pattern Whale and becomes Blazing Dragon Douluo 15.

Heaven Dou Confrontation

• Severely injures Salas and expels the Elephant Armored Sect from Myriad Treasures Pavilion 31.
• Confronts Xue Xing’s encirclement and defeats Dugu Bo with his Martial Soul’s power alone 39 41.
• Secures three concessions from Heaven Dou: construction of a border city, a copy of its book collection, and a research loan of the Vast Sea Cosmic Shroud 41.
• Departs for the Extreme North to help the younger generation obtain suitable Soul Rings 42 43.

Star Luo Campaign and Imperial Reinforcement

• Uses the Mingdou Mountain Range front as a feint while personally leading elite regiments toward Star Luo City 58 60.
• Forces Bai He to surrender the Crystal Blood Dragon Ginseng, pays one million Gold Soul Coins, and incapacitates the Speed Clan 62.
• Recruits the Breaking Clan through a combination of strength, imperial backing, and Xu Tianyang’s negotiations 64 65.
• Orders a Level Nine Fixed Soul Cannon Shell fired when Dai Tianfeng rejects surrender 68.
• Helps distribute Yang Wudi’s pills and obtain ninth Soul Rings for newly advanced imperial Titled Douluo 98.

Evil Demon Forest and Continental Rule

• Mobilizes the empire against the Evil Demon Forest, declaring that humanity will take the initiative against the Evil Emperor 111.
• Presides over the Soul Master Tournament’s opening ceremony 209.
• Supports the final advance toward Spirit City while reminding Xu Tianyang that his choices affect both his family and the empire’s citizens 254.
• After Bibi Dong’s death, consolidates conquered territories by promoting new beneficiaries and using them to suppress the former power holders. He reaches Level 99 as the continent comes under Sun Moon rule, with Spirit City remaining the exception 257.

Notable Quotes

“A person uses a martial soul; a martial soul must not control the person.” 22

“Tianyang's terms are the terms of our Sun Moon Empire!” 65

“Tianyang, you have never been alone. Behind you are me, your mother, Nian Shuang and the others. Even the countless citizens of the Sun Moon Empire stand behind you.” 254