Children put on a performance at the opening ceremony of the Qingming Cultural Festival in Kaifeng city, Henan province on April 3. The festival this year features performances, Song Dynasty (960-1279) dresses and honoring ancestors. Qingming Festival, or Tomb Sweeping Day- which falls on April 4 this year - is a national festival stretching back more than 2,500 years for people to honor and remember their deceased loved ones at cemeteries and memorials. [Photo/Xinhua]