The mathematics division at the top floor of String Light Research Institute occupied several of the building's quietest levels. Unlike the laboratories downstairs—filled with precision‑instrument hums, vacuum‑pump low roars, and engineers' enthusiastic discussions—this place resembled a silent deep‑sea of thought. Hallways laid with sound‑absorbing carpet; office doors on both sides usually closed. Only occasionally—chalkboard‑calculation rustling through door gaps, or late‑night coffee‑machine faint sounds—hinted this wasn't empty, but rather, countless intellects sinking, surging, constructing invisible magnificent halls.
Yue'er's office was deepest inside; one huge floor‑to‑ceiling window framed the city's extending skyline; the other three walls covered with writable special material, densely filled with mathematical symbols, arrows, and repeatedly‑erased‑yet‑re‑emerging geometric shapes. Now, she stood before the window, back turned toward that steel forest stacked by human civilization, gaze cast toward farther, more abstract void.
The news of Xiuxiu's team successfully breaking the EUV‑light‑source 250‑watt power barrier—like a warm yet powerful spring breeze—had already blown throughout the entire institute, naturally reaching her quiet domain. She felt genuine happiness for Xiuxiu; pride for that tenacious sister who had carved a path through engineering purgatory. That beam stably burning inside the vacuum chamber wasn't merely a technological milestone, but rather, like a strong signal—illuminating many originally obscure things—including her own heart's deepest, never clearly delineated or defined chaotic territory: **emotions**.
Crisis—like a peculiar catalyst. During those past days, nearly "under iron curtain"—the three each endured immense external pressures, yet spiritually closely interdependent. Mozi faced capital‑market overt‑covert attacks and regulatory‑agencies joint encirclement; he had to fragment the massive capital system into pieces, diving deeper, more complex rule‑maze—preserving their common cause's lifeline. That kind of dancing on blade‑edge danger—though Yue'er hadn't experienced personally—could clearly feel from his occasional late‑night call's voice's barely‑concealed weariness, and his more silent yet firmer gaze.
Xiuxiu fought another frontline; EUV‑light‑source power like a stubborn ghost hovering below critical point; each failed charge brought not just technical defeat, but also team morale and national expectations' heavy pressure. Yue'er remembered Xiuxiu's hoarse voice describing yet another near‑victory failure's disappointment; also remembered that moment—apart from offering possibly useless mathematical analogies and pure spiritual encouragement—what she could do truly limited.
And herself—trapped in the cage constructed by Professor Boissol's elegantly‑worded yet heavy‑weighed review comments. That questioning about "rigidity" and "flexibility"—like a sharp thorn stuck at her theory's most core position—slight touch triggered chain‑reaction intellectual agony and deep self‑doubt. It was Mozi—using his unique perspective from capital battlefield about "risk identification and management"—redefined that destructive "vulnerability report" into "specific problem" needing conquering. It was Xiuxiu—using her engineering practice's vivid analogy about "deformation compensation"—opened a new window allowing escape from either‑or thinking pattern.
Precisely during those days—each struggling, yet illuminating one another—an emotion transcending traditional definitions began breaking through soil in her heart, gradually growing luxuriantly. Different from her youthful innocent throbbing purely attracted to intellect; also different from romantic love described in literature—highly exclusive. This was a more complex, deeper **connection**.
For Mozi, she harbored profound intellectual admiration and spiritual reliance. He seemed her purely abstract, sometimes even otherworldly mathematical world's "**anchor**." He could with astonishing insight translate her highly abstract theoretical predicaments into real‑world comprehensible, addressable challenges. His calmness, his tenacity, his ability maintaining clear strategic mind under immense pressure—all gave her an indescribable sense of security. Conversing with him—not merely emotional consolation—but intellectual sharpening and perspective expansion. His embodiment "**unity of knowledge and action**"—using capital power to guard ideals and creation's practical character—let her see beyond theory, another powerful force changing world. This emotion—mixed admiration, trust, plus a deep, wanting‑to‑walk‑side‑by‑side longing.
For Xiuxiu, another entirely different yet wonderfully complementary emotion. That based on shared experience—sister‑like intimacy and affection. She admired Xiuxiu's engineer‑characteristic: facing problems directly, never‑giving‑up toughness and purity. Xiuxiu's world—concrete, material, filled with physical constraints and engineering challenges—contrasted sharply with her kingdom built by symbols‑logic—infinite freedom. Yet precisely this difference made their exchange brimming creative sparks. Xiuxiu could gain technical inspiration from her mathematical conceptions; she could extract profound mathematical problems from Xiuxiu's engineering predicaments. They mutually understood each other's domain's beauty and hardships—could at other's most vulnerable moment give most precise comfort and firmest support. That kind—without excessive words—arising from common struggle—deep friendship—comrades, soulmates.
In the past, she might have tried using traditional labels defining this complex emotional network—friendship? Love? Soulmate‑feeling? But any single label appeared so pale, narrow—unable encompass its richness, depth. It seemed simultaneously containing all these components, yet far surpassing their sum.
She recalled Mozi's words when questioned by Boissol: "Your problem—more real than markets." This sentence not only gave her strength then, now more made her contemplate. If the mathematical truth she pursued was "real"—then this emotional connection naturally growing between her‑Mozi‑Xiuxiu—filled creativity, support, profound understanding—wasn't this similarly within universe a non‑negligible "real" existence? It too followed some intrinsic, harmonious "law"—possessing powerful force, beauty.
Mathematics pursued **unity**—attempting using concise‑elegant theory linking seemingly disparate phenomena. The Langlands program was her lifelong‑pursued mathematical‑unification dream—trying building bridge between number‑theory‑geometry. Then, within human‑emotional domain—did there exist a more grand "**unified theory**"? A paradigm capable surpassing traditional binary oppositions, accommodating more complex, more plural connection patterns?
The stable, non‑exclusive, yet profoundly deep triangular connection formed between her‑Mozi‑Xiuxiu—wasn't this a living, evolving "**emotional‑unified model**"? This model didn't rely on possession‑exclusivity—but based mutual respect, deep understanding, unconditional support, shared vision creating future. Its "stability"—not from external norms‑contracts—but from internal elements' powerful attraction, complementarity, co‑growth energy. This itself—was a powerful, vibrant "theory."
This thought gave her unprecedented relief‑clarity. She no longer tried splitting, defining, entangling worldly categories. She chose accepting this emotion's original form—acknowledging its complexity, uniqueness, and immense nourishment for her personal life‑career. This connection—itself an answer—a more vivid, warmer "**existence proof**" than any formula.
Yet rational clarity didn't imply actional ease. Within this triangular relationship, Xiuxiu was that ring—same gender—possibly easier generating subtle tension. Though they mutually supported, deep affection—involving shared emotional connection with Mozi—a layer of unpierced window‑paper still existed. Yue'er understood deeply: any stable structure required honest communication as cornerstone. For this cherished "emotional unified body" to exist‑develop healthily‑lasting—she needed take initiative step, conduct open‑hearted dialogue with Xiuxiu.
She didn't hesitate long. After Xiuxiu's team celebration activity slightly subsided—a relatively quiet afternoon—Yue'er sent message inviting Xiuxiu to her office for tea.
Xiuxiu arrived quickly; face still bearing consecutive‑battle weariness, but eyes bright—showing post‑success relaxation‑delight. She took off coat, sat naturally in chair opposite Yue'er's desk, accepted warm herbal tea Yue'er offered.
"Your place comfortable—quiet." Xiuxiu inhaled deeply, glancing at surrounding walls' incomprehensible‑yet‑somehow‑reassuring mathematical symbols. "Feels the buzzing in brain reduced somewhat."
Yue'er smiled, sitting opposite her. Brief silence enveloped both; only tea steam rising gently in air.
"Xiuxiu," Yue'er spoke—voice gentle‑composed, carrying her unique rationality‑sincerity, "first, again congratulations. 250 watts—truly extraordinary. Though I can't fully appreciate hardships—I know you‑team gave how much."
Xiuxiu waved hand; face showing frank smile: "Ah, finally didn't drop chain. When pressure highest—really relied on you‑Mozi supporting. Especially you, Yue'er‑jie—that time you mentioned 'deformation‑compensation' idea—truly enlightened me."
"Glad help you." Yue'er nodded slightly; she held warm tea cup, organizing words—gaze clear toward Xiuxiu. "Actually today, I wanted to discuss… matters beyond work."
Xiuxiu seemed sensing something; she put down tea cup, straightened posture—eyes becoming serious: "Mm, speak."
Yue'er didn't evade Xiuxiu's gaze; she chose a direct‑open approach—like proving theorem needing clearly stating premises. "Xiuxiu—we known so many years, experienced so many things together. Some feelings—in my heart—increasingly clear. I think—you perhaps also perceive."
She paused—seeing Xiuxiu's eyes slightly flicker, but not interrupting—just listening quietly.
"My feelings toward Mozi—complex. Admiration, reliance… affection." Yue'er calmly said this word—without shyness—only statement‑fact‑like clarity. "Similarly—toward you, Xiuxiu—also have very‑very deep emotions—comrades, sisters, soulmates—any language difficult completely summarize—very‑important person."
She saw Xiuxiu's breath seemingly pause momentarily; fingers unconsciously curling slightly.
"I know—this emotional pattern—might not match most people's conventional cognition." Yue'er continued—tone still steady, but carrying an undeniable firmness. "During past period—especially when we together facing external pressures, yet each achieving breakthroughs—I increasingly clearly realize, the three of us—you‑I‑Mozi—forming this connection—**unique**. It gives me immense strength—allows facing academic doubts—makes me feel not alone in this world. It… it itself resembles 'unified theory' I pursue in mathematics—stable, harmonious, brimming creativity."
She leaned forward slightly—gaze more earnest: "Xiuxiu—I don't want use any traditional labels defining our relationship—because I think that simplifies, even profanes this unique connection. Also don't want because my feelings toward Mozi—damage our precious friendship—or make you feel any discomfort, threat. That absolutely not my intention."
Yue'er inhaled deeply—spoke her long‑considered conclusion: "I believe—we three—fate intertwined—a whole. We mutually need, mutually support, mutually achieve. Mozi… I think—toward us two—also harbors deep‑unique emotions. This emotion—perhaps not easily understood by mundane—but its 'reality' and 'power'—we each should feel."
She finally stopped—giving Xiuxiu digestion‑response space. Office again fell silent—only outside distant city's fuzzy background noise.
Xiuxiu lowered head—watching cup's floating‑sinking herbs—long silent. Yue'er could see her long eyelashes lightly tremble—revealing inner un‑calm. Time ticked—second‑by‑second—Yue'er's heart slightly lifted—though striving maintaining surface composure.
Finally—Xiuxiu raised head—her eye‑rims somewhat red—but face revealing a relieved—even somewhat unburdened smile.
"Yue'er‑jie," Xiuxiu's voice somewhat hoarse—yet exceptionally clear, "thank you… thanks you can so openly tell me these."
She paused—as if organizing own thoughts—then continued: "Actually… I roughly also sensed. Not only toward you‑Mozi—also includes myself… My feelings toward Mozi—also deep. That reliance‑trust—others can't substitute. Similarly—toward you, Yue'er‑jie—I also long considered you life's most‑important relative. Without you—when I drilling dead‑end—enlightening me; without you spiritually constantly supporting me—I probably couldn't reach today."
Xiuxiu's gaze turned firm: "You right—we three—long inseparable. Those external pressures—those together gnawing hard‑bone days—long bound us together. This relationship… somewhat special—perhaps many can't understand. But," she emphasized—tone carrying engineer‑characteristic pragmatism‑decisiveness, "**it works.** It made us all become better selves—made us able accomplish things one person fundamentally can't. That's enough—right?"
She looked toward Yue'er—eyes clear‑open: "I don't feel threatened, Yue'er‑jie. Contrarily—I feel… very settled. I know—whatever happens—we three—will be each other's firmest backing. As for Mozi that guy…" Xiuxiu's mouth‑corner lifted a slightly sly smile, "his heart's thoughts—we roughly clear. His silent‑gourd—probably more tangled than us. But as long as we know our mutual feelings—this 'triangle'—most stable structure."
Yue'er listening Xiuxiu's words—heart's final, subtle uneasy stone—finally completely landed. A huge warm current, deep emotion surged—making her eye‑rims moist. She reached out—firmly grasped Xiuxiu's hand on table.
"Mm." Yue'er forcefully nodded—voice carrying slight sob, but smile brilliantly bright, "most stable structure."
No need more words. At this moment—a deep, based complete openness‑mutual understanding **tacit accord**—between two exceptional women—formally reached. They jointly confirmed this unique emotional connection's legitimacy‑value; willing together maintain‑nurture it.
This wasn't a negotiation about possession‑distribution—but an exploration‑confirmation how with richer, more inclusive ways love‑be‑loved. They untied possible existing heart‑knots; reinforced mutual bond; also for their‑Mozi's more‑complex emotional equation—found a stable‑harmonious "**solution**."
Emotions' homecoming—not pointing toward singular endpoint—but flowing toward a broader, capable accommodating more possibilities—vibrant‑creative ecology. Within this emotional field co‑constructed by them three—love, no longer either‑or multiple‑choice question—but mutual achievement, co‑shining eternal theorem. Outside window—sunset afterglow dyed sky warm orange‑red—like the bright‑soft light filling their hearts now.