Two visitors walk past the mascot "Dan Dan" during the opening ceremony of the 30th Luoyang Peony Festival in Luoyang, central China's Henan province, April 5, 2012. Luoyang, home of China's best peonies, attracts a great number of tourists during the Luoyang Peony Festival every year while the plants are in full blossom. [Photo/Xinhua]