A group of tourists sit in?the sunken courtyard of a replica yaodong, or house cave, near?Yuncheng, Shanxi Province. The replica is part of the recently-opened “Ballads of the Yellow River” folk village, named after the “Yellow River Cantata,” a work popular for its patriotism during the Cultural Revolution, and the “Yellow River Piano Concerto” that followed. One question: how do you get down?