Chinanews, Beijing, July 14 – Currently there are 322 protected ancient buildings in Beijing, 60% of which are faced with severe hidden security problems. Besides, more than 77,000 families are living in such ancient buildings. It will take at least 100 billion yuan to relocate them.The information above was released on July 11, in the Long-Term Plan for Cultural Heritage Protection by Beijing Municipal Cultural Heritage Administration.Since 2000, Beijing has invested more than 100 million yuan every year to protect its cultural relics, particularly ancient buildings. Though some 330 thousand sq m of them are refurbished every year, that is only 6.4% of the total.