When Jiang Moxian, a girl from the Department of Mathematics, was sorting out her grandmother's Shonan Nüshu tapestry, she accidentally discovered that the topological structure of the characters concealed an encryption algorithm. When she converted lattice characters into hash keys and curved characters corresponding to elliptic curve equations, the female writing that had been silent for thousands of years actually became a weapon against the crypto monopoly. Joining hands with returned cryptographer Gu Zhaoheng and embroidery successor Lin Wanzhi, she established the Nüshu open source community and used topology to build an unbreakable intelligence network. When multinational corporations tried to acquire cryptographic patents, they used the "Nvshu Information Security Charter" to launch a global revolution in women's data autonomy - those curves that were once called "boudoir idle pens" eventually became the digital Great Wall that protects hundreds of millions of women.