《墨子·71章 杂守》
报告敌人来进攻时点燃的烽火，情况十分紧急时的烽火，混战的烽火，情况不一，要依次传火，直至传到国都为止。假如军情紧急异常，还要上下牵引烽火。
寇烽、惊烽、乱烽，传火以次应之，至主国止，其事急者引而上下之。
When an enemy invades, light a beacon, and use different beacons for urgent situations, melee, and other situations, and pass on the fire in turn until it reaches the national capital. In case of an extremely urgent situation, the beacon should also be pulled up and down.