Beacon fires and wolf-dung smoke

Beacon fire and wolf smoke "is an ancient military communication method. At high places in border military fortresses or transportation hubs, a high platform is built at regular intervals, commonly known as a beacon tower. In the event of an enemy situation, smoke during the day and light a fire at night, and connect the stations to transmit messages.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

The beacon tower is a high platform building used in ancient border areas to light fireworks. By igniting fuel on the beacon tower, the thick smoke produced can be seen from a distance, thus achieving rapid transmission of information. This method is mainly used to timely transmit information about enemy attacks; In the Spring and Autumn Period, the smoke burning during the day was called a beacon, and the fire burning at night was called a fire. The main way for the beacon to sound the alarm was to "raise burnt seeds and burn accumulated firewood", and the tool used to light the beacon was called a fire starter; Beacon towers mainly use the luminescence of burning materials and the smoke of incomplete burning materials as a means of communication. As the fastest and most effective alarm tool for transmitting military information in ancient times, it, together with the Great Wall, constitutes a complete military defense system.