Nothing can stop them! Heavy smog blankets part of China but it doesn’t stop the locals from donning face masks and dancing the Viennese Waltz Heavy smog blanketing northern and central China could not deter the spirits of a number of locals who took to the streets to dance. Dozens of flights and highways were closed on Monday but people in Fuyang, in the Anhui province, braved the shocking pollution, donning masks to perform their best Viennese Waltz.