Culture - two-person Units (ErRenTai)

Units two and are prevalent in the Inner Mongolia Autonomous Region, Shanxi, Shaanxi and Hebei provinces in northern opera drama, commonly known as "double-stuff", also known as "the two classes." 

 Since most of their repertoire using one ugly once the form of two concerts, two so called Units. 

 Around the two Units, in the long-term development process, gradually formed the different artistic styles to Hohhot in Inner Mongolia for the sector, divided into East and West Road, shortly before the founding of two Units collectively. 

 May 20, 2006, the two Units approved by the State Council included the first batch of national intangible cultural heritage.