The "Broken Moon Incident" in 2123 AD tore apart the structure of time and space, and human civilization was shattered into 2153 memory folds.
Lin Ying, a space-time messenger implanted with butterfly genes, discovered quantum cherry blossoms in the Chang'an nuclear ruins - these mysterious plants blooming in the space-time cemetery, turned out to be the coordinates of the cracks in the mirror universe. When she accidentally awakens Su Yan, a messenger from the late Tang Dynasty who has a star map memory embedded in his ribs, two "postmen" carrying civilization tombstones discover the horrific truth: the so-called Space-Time Administration is actually a petri dish for higher civilizations, and the "memory packages" being transported are actually spiritual food to feed the alien mother body.
The quantum umbilical cord of the bronze sacred tree in Sanxingdui, the tidal fingerprints in the Dunhuang murals, the reverse-growing celadon vase of the Song Dynasty... In it, they revealed a cruel agreement that spanned the ages. When the birthmark under Lin Ying's collarbone was proven to be the key to self-repair of the universe, Su Yan played the final chapter of "The Song of Feather Clothes" at the expense of rusting her ribs. At the moment when the roots of the cherry blossoms penetrated all the folds of time and space, the two civilizations reached a tragic reconciliation that used the increase of emotional entropy to counteract the tyranny of logic - the mycelium of time turned into blooming quantum cherry blossoms, and human beings finally changed from being observed experimental subjects to the writers of space-time letterheads.
Purpose: Open this quantum love letter with rust stains as ink and space-time folds as paper, and witness the most magnificent rebellion of mankind in the cosmic laboratory.