Back in ancient China as early as the times ofYin Shang more than three thousand and sevenhundred years ago,there were already organizedmeans of communication used by the rulers to reportfrontier alarms and to dispatch orders,which tookthe form of beacon fires,drum beats,or by sendingmessage carrying runners,the couriers.Till the timesof Zhou about a thousand years B.C.,courier Back in ancient China as early as the times ofYin Shang more than three thousand and sevenhundred years ago, there were already organized messages of communication used by the rulers to reportfrontier alarms and to dispatch orders, which took the form of beacon fires, drum beats, or by sendmessage carrying runners, the couriers.Till the timesof Zhou about a thousand years BC, courier