is located in the Zhangbi Village in Longfeng Town, Shanxi Province. It is the state-level cultural relic protection units, one of the "Chinese top ten charming ancient towns"; also is the second batch of selected "China's historical and cultural name village".
　　is a rare well-preserved miniature castle with military, residential and religious functions in Jiexiu, adorned with a cluster of precious historical sites, such asof Xia and Shang Dynasties (2070 BC - 1046 BC), tunnels constructed in Sui and Tang Dynasties, tombs of, theatre stages of Yuan Dynasties, residents built in Ming and Qing Dynasties, etc. It is a history-storyteller, still remaining residential, unimproved and mysterious, which gives travelers a better sense of what things were like and what once happened in the ancient time.
　　The old castle's elevation is 1040 meters, covering an area of about 0.12 million square meters. Its topography is high in the south and low in the north. Looking down from a height, you can see an ancient strategic defense base, and also you can see it's a place of orderly village.
　　The most dazzling thing is that, in this small, there are not only dwellings, but also the Tang and Song dynasties' temple, palace, pavilions, terraces, and towers. All of them integrate the cultures of Confucianism, Taoism and Buddhism. Moreover, some of the buildings and streets in, built in unique architectural style, are of residential and military importance.