Houses built before 1949, which are 60-70 years old, are not worth preserving, except some of historical and cultural value.
1949年以前的房子：有60 - 70年以上房龄，除个别有历史文物价值的，其它基本没有保留价值。
Usually, we have concentrated on the historical cultural value and economic advantage of the regeneration of architecture, but failed to recognize the importance of the nature of architecture.
长期以来，在学术上对建筑改造的关注往往偏重于历史文化价值或经济利益的得失，却轻视了建筑本体的使用需求。
You see the world-renowned architectural works, through temporal and spatial variation, and its historical and cultural value of the increase.
你可以看到世界著名的建筑作品，通过时空变化，其历史和文化价值的增加。
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