Singers from the Dong ethnic group prepare for a performance in Congjiang, Guizhou province, on Nov 28. More than 2,000 singers from Guizhou and Hunan provinces and the Guangxi Zhuang autonomous region sang at the Kam Grand Choir, a polyphonic choir that was listed as a world intangible cultural heritage in 2009. [PHOTO BY TIAN WEITAO/ FOR CHINA DAILY] |