Nanjing Wall is one of the largest and most complete ancient city walls in China and is also a world cultural heritage (as an important part of the "China Ming and Qing City Walls" project). Here is a detailed introduction to Nanjing Walls 1. Historical background - **Construction time**: Founded in 1366 (Yuan to Zheng 26 years), 28 years, in 1393 (Ming Hongwu 26 years) basically completed. - **Construction purpose**: Ming Taizu Zhu Yuanxu to consolidate the defense of the capital, Nanjing as the Beijing division (after Ming Chengzu moved to Beijing, Nanjing as the capital of the stay). - **Historical status**: Nanjing City Wall is the core project of the capital construction in the early Ming Dynasty, reflecting the superb skills of ancient Chinese military defense and urban planning. 2. Building characteristics - **Scale**: the original city wall is about 35.3 kilometers long, and the existing 25.1 kilometers. The wall is14-26 meters high, the top width 4-14 meters, and the base width 10-20 meters. Materials**: Granite or limestone-based, walls are made of specially made city bricks, bricks burned by 152 prefectures in 5 provinces in the middle and lower reaches of the Yangtze River, engraved with the names of craftsmen and officials (responsibility traceability system). -**Structure**: -**City Gate**: The original 13 city gates, existing Jubaomen (China Gate), Qingliang Gate, Xuanwu Gate, etc. China Gate is the largest city, composed of four city gates and Tibetan soldiers' caves. - **Moat**: Relying on the combination of natural water systems (such as Qinhuai River and Xuanwu Lake) and artificial excavation, forming a three-dimensional defense system. 3. Important paragraphs and attractions**- **China Menyu City**: China's largest city, with 27 Tibetan caves, can host 3,000 troops. - **Taicheng Section**: Adjacent to Xuanwu Lake, it is a great location to enjoy the landscape of the "Landscape City Forest". - **Jiefangmen to Taipingmen Section**: overlooking Jiming Temple and Zijin Mountain. - **Shenzemen (Peace Gate)**: The city gate that preserves the original style of the Ming Dynasty. *4. Cultural Value**-**World Heritage**: In 2012, Nanjing City Wall (partial paragraphs) was included in the Preparation List of China's World Heritage Sites as an extension of the "China Ming and Qing City Walls". - **Architectural art**: Combined with military, feng shui, architectural aesthetics, representing the peak of ancient China's city building technology. - **Historical memory**: The brick text of the city wall records the household registration and craftsman system of the Ming Dynasty, and is a "living archive" for the study of Ming history. 5. Protection and utilization**-**Protection measures**: 1956 was listed as a cultural relics protection unit in Jiangsu Province, and in 1988 was upgraded to a key cultural relics protection unit in the country. In recent years, protection has been strengthened through repairs and digital monitoring. - **Open tour**: Most paragraphs have been opened as parks, such as: - **Nanjing City Wall Museum** (near China Gate): Display of city wall history and cultural relics. - **Night tour project**: Ministry