A German delegation visits the Zhongshan Bridge, or the Yellow River Iron Bridge, on June 20. A cultural exchange activity entitled “One-hundred-year-old Zhongshan Bridge, China-Germany Exploration Trip” kicks off there to mark the 45th anniversary of the establishment of China-Germany diplomatic relations. In 1907, engineers from Belgium, Germany and the U.S., together with local workers, jointly built the sturdy and durable iron bridge. In honor of Sun Yat-sen (1866-1925), a great Chinese revolutionary, the bridge was renamed Zhongshan Bridge in 1942 and has witnessed the vicissitudes along the Yellow River over the past century. [Photo/Lanzhou.cn]