Xi'an City Wall in protection, innovation

In recent years, the Xi'an City Wall, as a symbol of the history and culture of Xi'an, capital of Northwest China's Shaanxi province, has become an important city brand after continuous improvements.

The Xi'an City Wall was expanded in the early Ming Dynasty (1368-1644) on the foundation of the imperial city walls of the Sui (581-618) and Tang (618-907) dynasties. It is the oldest, most well-preserved, and largest ancient city wall in the world.

With a perimeter of 13.74 kilometers, it includes a series of ancient architectural structures such as suspension bridges, gate towers, arrow towers, corner towers and parapets.

The city wall is more than 600 years old and suffers from cracks, bulges and flaky soil on a daily basis.

In addition to massive amounts of manual work, technology also provides a protective barrier for the city wall.

"We have installed 8,700 metal detectors on the city wall to monitor various dynamic data such as soil pH, vibration fluctuations, moat water level, and daily soil moisture changes in real time," said Wu Chun, deputy director of the Xi'an City Wall Management Committee.

In addition to the Hanguang Gate Museum, the enemy towers on the city wall have also been transformed into public cultural and art venues such as the Jinhuidui Art Museum, Armor Museum, Fan Yanyan Art Center, and City Brick Museum.

Meanwhile, the city wall has launched a series of cultural and creative products, mystery boxes, and digital collections, attracting many visitors.