Photo taken on April 6, 2013 shows tulips in full blossom at the People's Park in Zhengzhou, capital of Central China's Henan Province. (Xinhua/Li Bo)

Photo taken on April 6, 2013 shows tulips in full blossom at the People's Park in Zhengzhou, capital of Central China's Henan Province. (Xinhua/Li Bo)

Photo taken on April 6, 2013 shows tulips in full blossom at the People's Park in Zhengzhou, capital of Central China's Henan Province. (Xinhua/Li Bo)

Photo taken on April 6, 2013 shows tulips in full blossom at the People's Park in Zhengzhou, capital of Central China's Henan Province. (Xinhua/Li Bo)

A man takes photos of Magnolia flowers in full blossom in Chang'an Avenue in Beijing, capital of China, April 6, 2013. (Xinhua/Luo Xiaoguang)

Pedestrians take photos of Magnolia flowers in full blossom in Chang'an Avenue in Beijing, capital of China, April 6, 2013. (Xinhua/Luo Xiaoguang)

Photo taken on April 6, 2013 shows Magnolia flowers in full blossom in Beijing, capital of China. (Xinhua/Luo Xiaoguang)

Photo taken on April 6, 2013 shows Magnolia flowers in full blossom in Beijing, capital of China. (Xinhua/Luo Xiaoguang)

Photo taken on April 6, 2013 shows Magnolia flowers in full blossom in Beijing, capital of China. (Xinhua/Luo Xiaoguang)

A child sketches tulips at the People's Park during the three-day holiday of Qingming Festival in Zhengzhou, capital of Central China's Henan Province, April 6, 2013. (Xinhua/Li Bo)

People enjoy a boat ride at the People's Park during the three-day holiday of Qingming Festival in Zhengzhou, capital of Central China's Henan Province, April 6, 2013. (Xinhua/Li Bo)

A visitor takes photos of tulips at the People's Park during the three-day holiday of Qingming Festival in Zhengzhou, capital of Central China's Henan Province, April 6, 2013. (Xinhua/Li Bo)

A child was attracted by tulips at the People's Park during the three-day holiday of Qingming Festival in Zhengzhou, capital of Central China's Henan Province, April 6, 2013. (Xinhua/Li Bo)

People visit the People's Park during the three-day holiday of Qingming Festival in Zhengzhou, capital of Central China's Henan Province, April 6, 2013. (Xinhua/Li Bo)