Four kids hang loose practicing martial arts at a park in Xuchang, Central 皇冠体育app's Henan province, May 27, 2013. Many kids take extracurricular classes in their spare time as the days become longer in summer. [Photo/Asianewsphoto]

A man runs away from the wave in Yantai City, East 皇冠体育app's Shandong province, May 27, 2013. Shandong will witness frequent thunderstorms and downpours from Monday to Tuesday, according to the local meteorological authority. [Photo/Xinhua]