How many physical objects were investigated from 2005 to 2009?

From 2005 to 2009, 290,000 intangible cultural heritages were investigated. From 2005 to 2009, the first national survey of intangible cultural heritage left a surprising number of archives, established archives of intangible cultural heritage resources recorded by words, pictures and audio-visual, and collected a large number of precious objects and materials with historical, cultural and scientific values. According to statistics, this survey interviewed a total of 5000 folk artists1/kloc-0, collected more than 290,000 precious objects and materials, took 4.77 million pictures, and investigated nearly 870,000 intangible resources.