China's keju system, maturing under the Sui and Tang around 605 CE and elaborated under the Song, staffed a government through tested learning rather than birth for roughly thirteen centuries. Candidates mastered the Confucian classics and advanced through sealed local, provincial, and palace examinations toward the jinshi degree. It created a durable scholar-official class and offered commoners a narrow but real path upward; it also entrenched rote learning and gave wealth-backed preparation a structural advantage. Enlightenment Europe admired it. Benjamin Elman's scholarship reframed it as elite reproduction as much as meritocracy. It was abolished in 1905.
A young man sits alone in a brick cell barely wider than his shoulders, a board for a desk by day and a bed by night. For three days he does not leave. Outside, soldiers patrol rows of identical cells, thousands of them, while clerks copy out every essay in fresh ink so the graders can never recognize a hand. He has studied for this since childhood, memorizing books written a thousand years before he was born. If he passes, he may govern a county, or a province, or one day stand in the emperor's own hall. If he fails, he may sit the same ordeal again at forty, at sixty, until he dies. For thirteen centuries, China tried to choose its rulers this way: not by who their fathers were, but by what they could write down in a sealed room. It is the boldest bet any society ever placed on the idea that merit could be measured.