Citizens sign their names on a banner calling for better water sanitation to mark the upcoming World Water Day in Lianyungang, east China's Jiangsu province on March 21, 2010.
Volunteers ride in the street with banners calling for people to conserve water during a launch ceremony for the coming World Water Day as well as the China Water Week in Handan, north China's Hebei province on March 21, 2010.
Volunteers dress in costumes as water drops to urge people to cherish the water supply at City Technology College in Wenzhou, east China's Zhejiang province on March 21, 2010.
