The red-brick buildings of the Princeton Institute for Advanced Study appeared exceptionally tranquil under the autumn sun. Virginia creeper had been dyed in varying shades of red and gold, as if shielding this academic sanctuary from the clamor of the outside world. Yue'er sat in her office overlooking a small grove of trees, with clear windows and spotless cleanliness, where only the rustle of turning pages and the whisper of a pen tip sliding across draft paper could be heard. The air was suffused with the scent of old books, coffee, and a certain coolness belonging to pure thought. This was once a place where giants like Einstein, von Neumann, and Yang Zhenning pondered the mysteries of the universe; it was one of her spiritual homes, a place she believed could transcend politics, nationality, and even time.
Yet this tranquility was shattered by an email, meticulously worded and impeccably formatted.
The sender was the International Mathematical Union (IMU) and several of its major specialized committees. The subject line read, "Important Notice Regarding Membership and Academic Activities." The content was brief, logically clear, using the most polite official language to convey the most chillingly resolute message.
The email first thanked her for her outstanding contributions to the mathematical community in the past, then abruptly shifted tone, mentioning "relevant laws, regulations, and policy frameworks within the recent complex international environment." It expressed "deep regret" in notifying her that, in accordance with relevant statutes and external compliance requirements, it was decided to "suspend" all her formal membership privileges in the IMU and its related specialized committees effective immediately. Simultaneously, the scheduled one-hour plenary talk she was to deliver at next month's International Congress of Mathematicians (ICM), as well as subsequent invited lectures at several top European mathematical institutes, "had to be canceled." The email concluded with the customary "thank you for your understanding" and "look forward to future cooperation under appropriate circumstances."
There were no accusations, no debates, not even a mention of the words "String Light." Yet every character was steeped in the chill of political pressure.
Yue'er's fingers gripping the mouse paused for a moment, her fingertips turning slightly cold. She reread the email word by word, as if to confirm this wasn't some clumsy prank. On the screen, familiar mathematical symbols and formulas still flickered with the light of reason in another window, forming a sharp contrast with the irrational force represented by this email.
An emotion slowly welled up from the depths of her heart--not the anticipated anger, nor the grievance of being treated unjustly, but something deeper, more bone-chilling: sorrow.
Sorrow for mathematics itself.
In her view, mathematics was the purest, most transcendent edifice constructed by human reason. From ancient knot records to abstract Riemannian geometry, from the elegant proof of Fermat's Last Theorem to the profound territory she herself was exploring--connecting the P versus NP problem with the Langlands program--every advance in mathematics was a step on the ladder collectively climbed by human intellect. Numbers have no nationality; formulas recognize no ideology. The criterion for truth lies in the rigor and elegance of its intrinsic logic, not in which political entity or power structure it originates from. Euclid's "Elements," traversing millennia, remains the cornerstone of humanity's understanding of space. The calculus founded by Newton and Leibniz, whether born in England or Germany, equally propelled the wheel of the entire scientific revolution. The essence of mathematics lies precisely in this universality and objectivity that transcends individuals, regions, and eras.
And now, this email attempted to partition this pure land of thought, which ought to belong to all humanity, with political fences. What they "suspended" was not merely Yue'er's qualifications; they were tainting the very spirit of the academic community represented by mathematics itself--a spirit of freedom, openness, and allegiance solely to truth.
She recalled her youth, when she devoured Grothendieck's "Foundations of Algebraic Geometry" with insatiable hunger, was enthralled by the symmetry and subtlety of Galois group theory, and engaged in fierce debates with scholars from around the world before blackboards, all in pursuit of a more elegant proof. In those moments, nationality, background, and belief blurred, leaving only the shared quest for truth. That was what science ought to be.
Yet now, cracks had appeared in this invisible community. The hand of politics had rudely intruded, attempting to tint the clear spring of knowledge with color. This was not merely suppression targeting her personally; it was a trampling on the autonomy of science, a betrayal of the ideal of "mathematics without borders" defended with wisdom and dedication by countless generations of mathematicians.
She closed the email window without replying. Any argument or appeal seemed feeble in the face of such systemic pressure. She stood up, walked to the window, and gazed at the grove swaying in the autumn wind. The leaves rustled softly, as if narrating some timeless law, forming a stark contrast with the transient clamor of the human world.
Mozi confronted financial freezes and legal encirclement; Xiuxiu encountered technological blockades and supply chain fractures. They were each battling tangible pressures on their respective battlefields. Yet what Yue'er bore was a seemingly intangible yet equally heavy, even more poignant deprivation: she had been expelled from the international academic community she regarded as her spiritual home. This was a spiritual exile.
She recalled her last presentation at an IMU conference, with peers from around the world sitting below, their eyes gleaming with intelligence. They asked questions, raised doubts, expressed admiration--that pure collision of ideas was indispensable nourishment for her scientific career. Now, such scenes would not recur in the near future. She would be isolated on a deliberately constructed "information island," at least outside official, mainstream academic exchange channels.
This sense of isolation felt more incapacitating than any concrete difficulty.
Yet, after profound sorrow, something even more resilient grew from the depths of her heart. It stemmed from an unshakable faith in mathematical truth itself. Political storms might obscure the sky temporarily, but they could not alter the objective fact of the sun's existence. Truth was like that sun: its light might be temporarily blocked by clouds, attempted to be obstructed by walls, yet its own radiance would not diminish in the slightest. It remained there, burning eternally, awaiting the moment when clouds disperse and walls crumble.
She sat back down before the computer and opened her long‑dormant personal academic homepage. This page had once documented her research progress, preprint links, and academic activities--a small window through which she communicated with global mathematical peers. At this moment, even this window seemed veiled in shadow.
She pondered for a moment, then gently tapped the keyboard. There was no indictment, no justification, no emotional outpouring. She merely wrote a simple line at the very top of the homepage, in that most prominent space once reserved for showcasing the latest results, using the language most familiar to her and most universal in the mathematical world--English:
"The sun of truth does not go out just because someone tries to block it."
After writing these words, she gazed quietly at the screen, her expression calm and far‑reaching. This sentence was both a response to external pressure and a reminder to her own heart. The exploration of mathematics would not cease because of any political interference. Her thinking, her calculations, her pursuit of the ultimate unification of the P versus NP conjecture and the Langlands program would continue, in this office, on this land where she could still breathe and think freely.
She closed the webpage, picked up her pen again, and drew her attention back to the draft paper spread before her. On it, densely packed formulas and symbols awaited her guidance to unveil deeper mysteries of the universe. The clamor outside, like the wind beyond the window, existed but could no longer disturb the order within her heart.
She knew that Mozi was fending off the fiercest artillery fire at the front, while Xiuxiu was painstakingly rebuilding technological fortifications in the rear. As for her, her battlefield was right here, in this realm constructed by logic and imagination. Her weapons were her intellect, her perseverance, and her unwavering faith in truth.
She might have temporarily lost her membership in international academic organizations, lost the opportunity to speak on official forums, but she had never, and would never, lose mathematics itself. Mathematics was her border, her eternal spiritual home. And within this home, she would always be free.
The pen tip slid across the paper once more, emitting a steady, resolute rustle. That sound resembled a rational melody stubbornly rising through this academic wasteland shrouded in political gloom--faint yet imbued with the power to penetrate all veils. Sorrow transformed into quiet momentum. She knew that true radiance stemmed from unremitting exploration itself, not from any external recognition or label. Her work was to guard this glimmer until the day it once again illuminates the world.