What are the main reasons for the disappearance of ancient buildings?

The main reasons for the disappearance of ancient buildings are war and architecture.

1, the cause of the war. For example, the famous ancient city Yecheng, which was completely destroyed by the war and gradually disappeared from people's sight, is one of the eight ancient capitals in China. In 580 AD, Emperor Wendi, Duke Sui and Prime Minister suppressed Wei Chijiong, the general manager of Xiangzhou (Yecheng), who was dissatisfied with himself. In order to prevent the resurgence of anti-Yang forces in Hebei, he ordered Yecheng to be burned, and Xiangzhou, Yexian and most residents moved south to Anyang, which became ruins for generations.

2. Architectural reasons. For example, building water conservancy projects. 1959, he cheng (Chun 'an County) and Shicheng (Sui 'an County), which began in the Han and Tang Dynasties, were submerged under this blue wave overnight.

The former Chun 'an County and Sui 'an County in Zhejiang Province merged into Chun 'an County, and 290,000 people moved out of their homes. He cheng and Lion City, two ancient cities that have lasted for thousands of years, together with 27 towns, more than 654.38 million villages, 300,000 mu of fertile land and thousands of houses, quietly sank to the bottom of Qiandao Lake.

The reality of ancient architecture protection;

The law can't keep up, and our identification of cultural relics or immovable cultural relics is relatively slow. Some ancient buildings have not been listed, and the scope of laws and regulations is very limited, which makes some houses that have not been listed as immovable cultural relics demolished. So these cultural relics may be divided into several categories: immovable, historical and so on.

It is impossible to designate all the world cultural heritages within one year, and different declarations will be made every year. In addition, for example, the ancient city wall of Changsha, which was unearthed during construction, was unknown before, and experts thought it was very important and needed to be included in the protection scope immediately.