How many recent years of non-cultural heritage less big data

17.80%. Affected by the dissemination of the national epidemic, the average value of non-cultural heritage vitality of the national city in January 2022 decreased by 17.80% compared with the December 2021 data. Intangible cultural heritage (ICH) refers to a variety of traditional cultural expressions that have been handed down from generation to generation by peoples and are considered part of their cultural heritage.