In urban construction and development, special attention should be paid to avoiding "constructive destruction" of ancient buildings. There is no doubt that there is a contradiction between modernization and the protection of historical relics. "Constructive destruction" means that production and construction have had a negative impact, threatening or even destroying cultural relics. Cultural relics are priceless. Once destroyed, they can never be made up. Moreover, they also have direct economic value and have a great relationship with the development of tourism. Therefore, it is necessary to emphasize overall planning and careful arrangement to protect cultural relics while doing a good job in construction. For example, when Beijing built the Second Ring Road and Deshengmen Overpass, it was originally intended to demolish the archway of the ancient city wall. Fortunately, some experts expressed reservations and helped the construction department to make suggestions, which were finally adopted by the municipal government. Although the investment in some projects has been increased, the ancient buildings have been preserved, and it is worthwhile to consider them comprehensively. In addition, there are also counterproductive cases in urban construction. For example, next to the Little Wild Goose Pagoda, a historic site in Xi 'an, a dozen high-rise buildings were built, which seriously affected the landscape effect of the surrounding environment of ancient buildings. For the convenience of tourists, a cable car was built on the Mutianyu Great Wall in Beijing, but the landscape was destroyed. Moreover, some places of interest have been restored in the past. However, if we don't master the appropriate construction technology and technical level, the restoration will even look neither fish nor fowl, but it will destroy the historical value of ancient buildings. Therefore, it is not easy to protect ancient buildings and rush to repair them.
Our protection of ancient buildings in urban construction is not rigid. The times should advance, cities should be organically updated, and people's living conditions should be gradually improved, which requires that urban construction and updating is a necessary process. In this process, what role should ancient buildings play? Loi Malraux, promulgated by France in 1962, puts forward that the purpose of protecting the historical environment should be to promote the development of the city. Therefore, the protection and utilization of historical sites should be combined to provide various ways for the vitality of protected areas, not just the sealing of historical heritage. Various reasonable and effective methods and means should be adopted to promote the rational metabolism of historical sites. Complete protection, reasonable restoration, reconstruction and reuse are all available methods. It can be seen that even in historical areas, it is reasonable and feasible to properly rebuild, expand or reuse cultural relics.
As for the specific protection and utilization methods, it is necessary to analyze specific problems. All these measures for architectural heritage have a premise, that is, to analyze the specific value of buildings and classify them. Some buildings should retain the museum style, some buildings can continue to use without changing the nature of use for protection, and some buildings can only retain the appearance and completely transform the interior. Through the above methods, ancient buildings can be effectively protected and reasonably utilized, so that they can play their own role and be well coordinated with the development and construction of modern cities.
In this kind of cooperation, the use function of cultural relics buildings is often adjusted. As heritage buildings bear rich historical information, they show the social life, art, science and other contents of the historical era in which they were built to future generations like exhibits, which has high historical and cultural value. With the change of history, the original use function of cultural relics buildings often cannot meet the actual needs and may be abandoned. Even if it continues to be used as a special building type (such as residence and factory building), it can only be used by a small number of people, and the general public has no chance to visit and understand. In this case, cultural relics buildings are directly used or converted into public buildings serving social life, such as museums and urban landscapes. It can better display the cultural relic building itself, make the cultural relic building play an active role in modern social life, become a public place with good cultural quality, and let more people have the opportunity to know and understand its valuable value and fully embody and play its role. At the same time, the good use and maintenance of cultural relics buildings is also conducive to their protection.