“How many enemies do you think this tower could spot?” That’s the question echoing as we stand before Yanqing County’s Enemy Tower Number 251. This tower is more than just stone and brick. It is a sentinel of the past. It stands as a testament to China’s enduring strength.
The Yanqing County 251 military tower was part of a comprehensive defensive system. It included walls, fortresses, watchtowers, and garrison towns. The Ming Dynasty operated this system with elaborate command and control. Nine military districts managed the defense. They maintained the over 4,100-mile Ming Wall. It stretched from the Yalu River to the Jiayuguan Pass.
Strategically placed, this type of defensive construction was built on easily defended terrain. This tower is on high ground. A small force here could deter a larger invading army. The saying was: “One warrior manning the fort denies entry to an army of 10,000.”
Watchtowers like Yanqing County 251 were critical. They were used for observation and signaling. Soldiers watched for enemy movements from the top. The bottom stored supplies and served as living quarters.
Beacon towers were also used for communication. They relayed messages about enemy movements to Beijing. Each tower stored firewood, hay, and sulphur for fires. Dried wolf dung was used too. Thus, they were also known as “wolves’ dung smoke towers”. Flags and red lanterns served as back-up signals.
Ming records detailed signaling codes. One beacon fire meant one to 100 enemies. Two fires signaled 500 enemies. Three fires meant over 1,000 enemy forces. Four fires meant upwards of 5,000 troops. Five fires indicated more than 10,000 enemies.
Intelligence gathering was vital. Soldiers spied on Mongol developments. Some even infiltrated Mongol camps. In 1450, a patrol set fire to a Mongol camp.
Defenders used various weapons. Bows, spears, and swords evolved into guns and cannons. Stacks of stones were also available to throw down on enemies. Battlements allowed soldiers to defend the wall. Crenellations faced the enemy side. Drainage holes prevented vegetation growth on the enemy side.
The zhang qiang provided defensive barriers. These were used if the enemy accessed the wall. Retractable rope ladders connected tower sections. This allowed soldiers to fight from above.
At its peak, a million soldiers defended the Ming Wall. Most lived in structures on the wall itself. Regional commanders lived in nearby garrison towns. Soldiers spent most of their time working nearby fields, not just watching for enemies.
Yanqing County is home to a varied Great Wall. Much of this area is easily accessible. Yanqing County covers 1,992 square kilometers. It is home to just under half a million people. This section of the wall was reconstructed in the early Ming Dynasty. Some parts are steep and slippery.
The Yanqing Great Wall offers stunning views. One can see round watchtowers. Also, a tower made from mud bricks. The remains of Changyucheng, or Long Valley City, are also visible.
So, as we stand here at Yanqing County 251, remember its strategic importance. It was part of a vital defense system. It protected the empire. It stands as a silent guardian. It watched over the land.