The Great Wall Algorithm: Yangyang

Lin Yuan, a graduate student in history, developed an algorithm hoping to decipher the Great Wall's secrets in a database, but his paper was rejected. Back among the ruins of his hometown, his blood accidentally seeped into a broken Ming-dynasty brick. Memories from the final moments of an old soldier defending Shanhaiguan in 1644 exploded inside his mind.

From then on, whenever he touched a city brick, he could experience history through it: the “acoustic algorithm” the saber unit at Xifengkou used to locate enemy troops by echoes from the wall; the sophisticated game-theory models behind the border trade at Zhenbeitai; the ancient fluid-dynamics wisdom at Laoniuwan, where people harnessed the force of spring ice floods. The Great Wall was far more than a wall. It was an ancient system still in operation.

But someone else coveted this System. Shen Zhi, a brilliant scholar and the theoretical heart of the Seekers, was determined to upgrade the Great Wall's “algorithm” into the ultimate firewall for global information control. Everyone he considered an “impurity” would be blocked and forgotten.

Amid echoes reverberating across time, Lin Yuan gathered the names grand historical narratives had forgotten: garrison soldiers, refugees fleeing famine, a female teacher who delivered water. For three thousand years, he was executed in life after life and reborn again and again, yet never stopped carving their names into the bricks. This time, he would use the algorithms of the big-data age to prove to Shen Zhi that in the algorithm of civilization, no individual could be sacrificed.

The Great Wall is not in the bricks and stones. It is in people's hearts. Your name is the weapon I will use to fight back.