Premier Wen Jiabao (C) is seen during a warm-up activity at a PE class in Shibalidian Primary School in Chaoyang district, Beijing, May 31, 2011. Wen paid a visit to the school Tuesday, where he joined students in a basketball game and encouraged children to stay healthy by participating in sports and other physical activities. [Photo/Xinhua]

Premier Wen Jiabao (R2) makes a layup during a basketball game at a PE class in Shibalidian primary school in Chaoyang district, Beijing, May 31, 2011. [Photo/Xinhua]