Ten-Thousand-Year Ice Marrow

Biodata

Feature	Value
Name	Ten-Thousand-Year Ice Marrow
Original Name	万载玄冰髓
Type	Ice-element heavenly treasure
Location	Originally within the Ten-Thousand-Year Ice Marrow Cave beneath a cold spring near Dragon City, at the border of the Heaven Dou Empire and the Far North 17 23 26
Status	Fully harvested from the Dragon City cave and retained or distributed through Shui Qinghan's storage Soul Tools. With the final Ice Marrow removed, the cave began warming and is expected to disappear because the site cannot sustain regeneration. 61 65
First Appearance	Mentioned in Chapter 17; physically discovered in Chapter 26 17 26

Power Progression

Stage	Development	Result
Discovery and first absorption	Shui Qinghan discovers forty-nine pillars in the Dragon City cave and absorbs one pillar. 26	She advances from Rank 85 to Rank 87 and gains a stronger, purer ice Martial Soul origin. 26
Cave cultivation period	Most of the deposit remains in place, allowing Jiang Lan, Shui Bing'er, Shui Yue'er, and Xue Wu to cultivate in the leaking ice-element energy. 27 37 40 50	The cave becomes the group's primary mimetic cultivation site and steadily improves their soul power, physiques, and Martial Soul foundations. 38 40 50
High-rank breakthroughs	Retrieved portions assist Shui Qingrou's Rank 80 breakthrough and Shui Qinghan's Soul Core condensation. 38 40 61	Shui Qinghan reaches Rank 90 and forms an Ice Luan Soul Core, while Shui Qingrou becomes a Soul Douluo. 61
Final harvest	Following Shui Qinghan's Ultimate Ice evolution, she enters the cave alone, gains insight into extreme ice, and collects every remaining pillar in a stone chest. 64 65	The Dragon City cave loses its sustaining source of cold and begins warming toward disappearance. 65
Post-harvest distribution	Stored Ice Marrow continues supporting Jiang Lan, Shui Qinghan, Shui Qingrou, Shui Bing'er, and Xue Wu. 68 112 114 116	Jiang Lan reaches Rank 40, Shui Qinghan reaches Rank 97, Shui Qingrou reaches peak Rank 89 before condensing her Soul Core, and Shui Bing'er and Xue Wu each gain three ranks in just over a month. 115 116
Later Title Rank advancement	Shui Qingrou uses Ice Marrow together with her Water-Attribute Soul Core and a ninety-thousand-year Evil Spirit Orca Soul Ring. 141	She rises to Rank 93 before later Soul Bone absorptions carry her to Rank 95. 141

Background / History

Jiang Lan recalls the Ice Marrow through fragments of purported bloodline memories and identifies it as an opportunity for ice-attribute soul masters comparable in value to immortal herbs. He tells Shui Qinghan that it can aid cultivation, improve or evolve a martial soul, and potentially help her overcome the bottleneck to Titled Douluo. He traces its approximate location to Dragon City. 17

Shui Qinghan’s explorations confirm that the cave lies beneath a natural cold spring in the Far North Mountains. An Ice Extreme Divine Crystal Mine is discovered first; Jiang Lan identifies it as a companion deposit rather than the true Ice Marrow site. 22 24

The group reaches the actual cave through an opening at the spring’s source. Inside the small cavern, white ice pillars contain liquid-like Ice Marrow essence and emit a chill potent enough to freeze souls without Jiang Lan’s Sea of Tides domain. 26

Following the discovery, Shui Qinghan preserves most of the Ice Marrow in place so that its leakage can maintain the cave as a mimetic cultivation site for Jiang Lan, Shui Bing'er, Shui Yue'er, and later Xue Wu. Shui Qingrou is instead given a retrieved pillar at the cold spring’s shore to assist her Rank 80 breakthrough. 27 38 40 50

After reaching Rank 89, Shui Qinghan takes another portion of Ice Marrow to support her Soul Core condensation and breakthrough to Rank 90. By then, the removal of four portions has already noticeably weakened the cave’s ice-element energy. 61

Once Shui Qinghan’s breakthrough makes Dragon City and the Cold Spring difficult to keep secret, she decides to collect the remaining Ice Marrow before departing. She enters the cave alone with Ultimate Ice, gains insight into the extreme ice attribute, and harvests the remaining Ice Marrow into a stone chest stored in her storage Soul Tool. The cave begins warming after the final portion is removed. 64 65

The harvested Ice Marrow continues to be allocated among the group after their return to Skywater Academy. Jiang Lan directly refines it to accelerate his cultivation, Shui Qinghan uses additional portions to reach Rank 97, and Shui Qingrou receives further portions that bring her to peak Rank 89 and later support her advancement to Rank 93. Shui Bing'er and Xue Wu also receive portions after obtaining their third soul rings, which rapidly improve their cultivation and ice-attribute foundations. 68 114 115 116 141

Appearance

The Ten-Thousand-Year Ice Marrow is contained within white ice pillars scattered throughout its cave.

• The pillars vary in size and contain faintly flowing, liquid-like essence. 26
• They release extreme cold and dense, mist-like ice-element heaven-and-earth energy. 26
• A fully depleted pillar dims, collapses, or shatters into fragments or powder. 26 35 40
• When removed from the cave, it appears as a snow-white icicle or pillar that radiates a bone-piercing chill and can rapidly lower the temperature of an enclosed room. 38 68

Properties

Ice-Element Cultivation Resource

The Ice Marrow’s essence is exceptionally pure, vast, and gentle when guided into an ice-attribute soul master’s body. It raises soul power while improving the quality and coldness of the user’s ice attribute. 26

• It strengthens the origin of a martial soul and can indirectly improve innate talent. 26 40
• It is described as capable of transforming or evolving ice-attribute martial souls. 17
• For ice-attribute soul masters, it is considered more valuable than a hundred-thousand-year soul ring or soul bone. 26
• Jiang Lan estimates that even a fingernail-sized amount could allow him and the others to reach Rank 30 within a year. 23
• Its essence also nourishes the body, bones, meridians, internal organs, and vitality while filtering and purifying soul power. 68
• A user must absorb it gradually. Over-absorption can exceed the body’s limit and cause unconsciousness. 26 68
• Its potency is sufficient that one-tenth of a pillar is said to be capable of raising a Rank 30 soul master to Rank 40. 50
• A single harvested pillar is estimated to be sufficient for Jiang Lan to cultivate to Rank 50 when refined gradually. 68

Martial Soul Evolution and Ultimate Ice

The Ice Marrow can elevate an ice-attribute martial soul toward Ultimate Ice by improving both its origin and its attainable low temperature.

• Shui Qinghan’s absorption strengthens the origin of her Water-Congealing Flying Luan and purifies its ice attribute. 26
• Shui Bing'er and Xue Wu are expected to have a chance to evolve their ice-attribute martial souls through absorption after reaching Rank 30. 50 54
• Entering the Ultimate Ice domain is defined by producing temperatures of approximately negative 150 degrees Celsius. 54
• An ultimate attribute slows ordinary soul-power cultivation after Rank 30 because the user’s soul power becomes denser, though Ice Marrow can offset this reduced cultivation speed. 60
• Continued use strengthens Martial Soul foundations, purifies ice attributes, and pushes Shui Bing'er and Xue Wu's abilities toward ultimate attributes. 116
• Shui Qinghan’s absorption and subsequent Soul Core breakthrough ultimately allow her to enter the Ultimate Ice domain. 61 62

Cave Cultivation Environment

Essence leaking from the pillars created an unusually effective mimetic cultivation environment before the final harvest.

• The cave’s ice-element energy condensed into visible mist. 26 40
• One day of cultivation inside was estimated to equal several days outside; two months inside were said to equal about one year of normal cultivation. 26 38
• The environment benefited water-attribute soul masters as well, since ice and water share the same origin. 40
• Shui Qinghan initially left most Ice Marrow in place so the cave could continue benefiting Jiang Lan, Shui Bing'er, Shui Yue'er, and Xue Wu. 27 37 50
• After four portions were removed, the concentration of ice-element heaven-and-earth energy had already begun to decline. 61
• The final harvest caused the cave’s temperature to rise and left the former cultivation site close to disappearing. 65

Extreme Cold

The cave’s cold is a major barrier to access and extraction.

• Shui Qinghan believes even Titled Douluo—and possibly Super Douluo—would be unable to remain inside for long. 17 27
• Jiang Lan’s Sea of Tides domain negates the elemental cold, allowing him to enter safely and protect companions. 17 26
• Ordinary ice-attribute soul masters cannot easily approach or mine the site without ultimate ice power. 17
• Even after the cave’s cold weakens, its temperature remains more than 200 degrees below zero, enough to temporarily freeze an Ultimate Ice user stiff without killing them. 65
• Following her Ultimate Ice evolution and Soul Core condensation, Shui Qinghan can enter the cave without Jiang Lan’s domain and gradually adapt to its cold by absorbing its ice-element energy. 64 65

Regeneration and Storage

The Ice Marrow’s ability to regenerate depends on its environment.

• If an Ice Marrow Cave is located in the Far North’s core region, leaving a portion behind allows the resource to regenerate over time. 61
• The Dragon City cave lies too far from the Far North’s core region; its temperature can barely sustain the Ice Marrow, so the site will disappear after the resource is removed. 61
• Shui Qinghan can temporarily seal a harvested portion’s chill in jade for storage in a storage Soul Tool. 61
• During the final harvest, she stores the Ice Marrow in a stone chest before placing the chest into her storage Soul Tool. 65
• Jiang Lan later keeps an allocated pillar in his Starlight Blue Jewel Bracelet and withdraws it between absorption sessions. 68

Documented Effects

Recipient	Result
Shui Qinghan	Absorbs one pillar over three hours, advancing from Rank 85 to Rank 87 while strengthening her martial soul’s origin and purifying its ice attribute. 26
Shui Qinghan	Later reaches peak Rank 89 after further Ice Marrow cultivation, bringing her one step from Rank 90. 35
Shui Qinghan	Uses a further portion as support for Soul Core condensation, breaking through from peak Rank 89 to Rank 90; the remaining essence is expected to raise her cultivation further after refinement and her ninth soul ring. 61
Shui Qinghan	Absorbs two additional portions after gaining her ninth soul skill and torso Soul Bone ability, raising her cultivation to Rank 97. 115
Shui Qingrou	Absorbs part of a retrieved pillar and breaks through the Rank 79 bottleneck to Rank 80; continued absorption increases the quality and abundance of her soul power. 38 40
Shui Qingrou	Receives further harvested portions under Shui Qinghan's supervision and reaches peak Rank 89, one step from the Title Rank. 112 114
Shui Qingrou	Uses Ice Marrow alongside her Water-Attribute Soul Core and a ninety-thousand-year Evil Spirit Orca Soul Ring, advancing to Rank 93. 141
Jiang Lan, Shui Bing'er, and Shui Yue'er	Cultivate using the cave’s ambient energy, which increases soul power and gradually strengthens their martial soul origins. 26 27 40
Xue Wu	Cultivates in the cave’s ambient energy and experiences an intense craving from her ice-attribute martial soul for the Ice Marrow itself; she is instructed to reach Rank 30 before directly absorbing it. 50
Jiang Lan	Directly absorbs a harvested portion after leaving Dragon City. The essence purifies and condenses his soul power while strengthening his physique; he estimates that fully refining the absorbed essence will raise him at least one rank and take about one month. 68
Jiang Lan	Maintains an approximate rate of one rank per month through six months of Ice Marrow-assisted cultivation, reaching Rank 39; he subsequently reaches Rank 40. 115 116
Shui Bing'er and Xue Wu	Each receives a harvested portion after obtaining her third soul ring and gains three ranks in just over a month, while her Martial Soul foundation, physique, meridians, and ice attribute are strengthened. 116

Distribution

At the time of discovery, Shui Qinghan counts forty-nine Ice Marrow pillars in the cave and proposes distributing them among her family and disciples. 26

• Jiang Lan — fifteen pillars planned. 26
• Shui Bing'er — twelve pillars planned. 26
• Shui Yue'er — twelve pillars planned. 26
• Shui Qinghan — five pillars planned. 26
• Shui Qingrou — five pillars planned. 26

The original allocation is later supplemented by Xue Wu’s admission into the group and her promised access to a certain amount of Ice Marrow for cultivation. 42

Shui Qinghan initially leaves the majority of the allocation within the cave to preserve its cultivation environment. She later retrieves portions for Shui Qingrou’s Rank 80 breakthrough and her own Soul Core breakthrough before harvesting the remaining Ice Marrow when the group leaves Dragon City. 38 61 65

Following the final harvest, Shui Qinghan continues distributing stored portions according to the group’s needs. Jiang Lan uses Ice Marrow for sustained cultivation, Shui Bing'er and Xue Wu receive portions after obtaining their third soul rings, and Shui Qingrou receives additional portions to prepare for the Title Rank. 68 112 114 116

Notable Facts

• The Ice Marrow Cave is located beneath the springhead of a cold spring near Dragon City. 23 24 26
• The cave itself is approximately ten square meters in area and no more than one and a half meters high. 26
• Shui Qinghan initially preserves the site rather than removing all of its Ice Marrow, judging the ongoing cultivation environment more valuable than storing the resource elsewhere. 27
• The Dragon City deposit cannot sustainably regenerate once harvested because it is too distant from the Far North’s core region. 61
• Shui Qinghan ultimately removes the remaining Ice Marrow before leaving Dragon City, ending the cave’s role as the group’s cultivation site. 64 65
• The cave’s former extreme cold gives Shui Qinghan direct insight into Ultimate Ice after she develops the attribute and Soul Core necessary to withstand it. 65
• The Ice Marrow’s post-harvest use remains a major source of rapid advancement for the Skywater Academy group. 115 116 141

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