As a product of the cold weapon era, the ancient military thoughts reflected in the small ruins of Wengcheng still have enlightening significance for modern warfare.

Wengcheng, also known as Moon City and Quchi. In order to strengthen the defensive ability of the castle or pass, the urn is a semi-circular or square gatekeeper town built outside the city gate (also inside the city gate), which belongs to the ancient city wall of China. Both sides of the urn are connected with the city wall, and there are watchtowers, gates and other defense facilities in the urn. When the enemy invades the urn door, if the main entrance and the urn door are closed, the defenders can capture the enemy in one fell swoop, forming a trend of "catching turtles in a jar".

Wengcheng also has a unique function, which is to resist the attack of siege hammer. Siege hammer, also known as siege hammer, is a heavy weapon composed of rope, wood and metal blocks. It is a battering ram that needs dozens of big men to lift, and it became an invincible weapon during the Crusade. The siege hammer was also a "winning general" in the weapons used in collective operations in the Middle Ages, so it was recorded in history. There is a kind of battering ram with wheels, and it takes several strong men to push the battering ram repeatedly to reach the city gate.

Second, the ancient city of Huizhou:

Huizhou ancient city, also known as Shexian ancient city, was called Xin 'an county in ancient times. Located in Huicheng Town, Shexian County, Huangshan City, Anhui Province, with a total area of 24.7 square kilometers. The ancient city, which was founded in Qin Dynasty, has been the seat of Hui county, prefecture and government since the Tang Dynasty, so the county and prefecture are in one city, forming a unique city-to-city style. Huizhou ancient city is the birthplace of Huizhou studies, one of the three major schools in China, and is known as "Southeast Zou Lu, the state of etiquette".

Huizhou ancient city is divided into inner city and outer profile, with four gates: east, west, north and south. In addition, the urn, city gate, ancient street, Gu Xiang, etc. have been preserved.

There are Huiyuan, Yuliangba, Guo Xushi Square, Doushan Street, Tao Xingzhi Memorial Hall, Xin 'an Monument Garden, Taibai Building and so on. It covers Hui culture, such as Xin 'an Neo-Confucianism, Hui Pu Xue, Xin 'an Medicine, Xin 'an Painting School, Hui Printmaking, Hui Seal Carving, Hui Opera, Hui Merchants, Hui Architecture, Hui Cuisine, Hui Tea Ceremony and Hui Dialect.

Huizhou Ancient City is one of the four well-preserved ancient cities in China. /kloc-0 was listed as a national historical and cultural city by the State Council in 1986, and was listed as a part of the ancient Huizhou cultural tourist area in 20 14.

Third, anecdotes and allusions:

The ancients believed that the geomantic geography of prefectures and counties was closely related to people's livelihood, and a little carelessness would bring natural and man-made disasters. Even trivial things should not be careless. Huizhou attaches great importance to the theory of geomantic omen. For example, in the Song and Yuan Dynasties (1 190), Huizhou was ordered to take office, and the plaques in the yamen were replaced by official documents, and everything was completely new. County people think that their words are too dry, especially in Yuzhou, and they are privately worried. Sure enough, in April of the following year, a fire broke out in the county library, burning the official residence and houses. Only two nights a day, the county seat is sold out. Another example is that during the Kangxi period of the Qing Dynasty, Shexian county rebuilt the lobby of the county government and raised the foundation without authorization. That is, some feng shui masters say that the county-based mountains are numerous and flat, and the towers are towering to avoid evil peaks; It may go up by two feet today.

Soon, the matter of prison litigation flourished, and the humanistic customs were far from comparable. Zheng Bangyuan, a native of Shexian county, is even more knowledgeable in geography. He wrote to the county magistrate, the government and the province and donated money to rebuild it in order to restore the old system. Government buildings are also very particular about choosing dates. In the late Qing Dynasty, the South Bridge Building in Huizhou was crumbling. Feng Ru, the magistrate, urged donations to make up the funds, and asked Feng Shui master to choose Xuantong as the auspicious day to start construction on February 20th, 2003.