A butterfly rests on a peony flower during the 32nd Luoyang Peony Culture Festival in Luoyang, central China's Henan Province, April 13, 2014. (Xinhua/Wang Song)
Photo taken on April 13, 2014 shows various species of butterflies in the butterfly house during the 32nd Luoyang Peony Culture Festival in Luoyang, central China's Henan Province. (Xinhua/Wang Song)
Photo taken on April 13, 2014 shows a butterfly resting on a net during the 32th Luoyang Peony Culture Festival in Luoyang, central China's Henan Province. (Xinhua/Wang Song)
A butterfly rests on a tree during the 32nd Luoyang Peony Culture Festival in Luoyang, central China's Henan Province, April 13, 2014. (Xinhua/Wang Song)
A butterfly rests on a peony flower during the 32nd Luoyang Peony Culture Festival in Luoyang, central China's Henan Province, April 13, 2014. (Xinhua/Wang Song)
A butterfly rests on a visitor's finger during the 32nd Luoyang Peony Culture Festival in Luoyang, central China's Henan Province, April 13, 2014. (Xinhua/Wang Song)
