Worshippers wearing Chinese ancient costumes pay homage to Emperor Yan and Yellow Emperor during a worshipping ceremony held in Zhengzhou, capital of central China's Henan province, April 4, 2011, on the occassion of the Qingming Fesitval, or Tomb-Sweeping Day. Emperor Yan and Yellow Emperor are half-historical and half-legendary hero figures in Chinese history and mythology, and both of them are considered the ancestors of Chinese nation.[Photo/Xinhua]

Personages of all circles pay homage to Emperor Yan during a ceremony held in Jiaozuo, central China's Henan province, April 4, 2011, on the occassion of the Qingming Festival, or Tomb-Sweeping Day. Emperor Yan is a half-historical and half-legendary hero figure in Chinese history and mythology, and is considered one of the ancestors of Chinese nation.[Photo/Xinhua]