The Ancient Chinese Postal System: Relay Stations Across the Empire

The ancient Chinese postal and relay system (驿传, yichuan) was one of the most sophisticated information networks in the ancient world, enabling the rapid transmission of imperial edicts, military dispatches, and official correspondence across China's vast territory.

The Relay Station Network

Post stations (驿站, yizhan) were established every 30-40 li (approximately 15-20 kilometers) along major roads, staffed by official postmen and horses. Imperial couriers could travel up to 300 kilometers per day on relay horses — a remarkable speed for pre-modern times.

From Han Dynasty to Tang Dynasty

The Han Dynasty postal system was one of the most advanced in the ancient world, with stations every 10 kilometers and relay horses stationed at regular intervals. The Tang Dynasty expanded the system further, with thousands of stations across the empire.