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North Korean leader Kim Jong-un arrived in China's border city of Dandong on Saturday via a newly opened bridge linking the two nations, according to a South Korean government source cited by Yonhap News Agency. The visit is his first to China in more than a year, KBS World reports. Yonhap later reported that Kim appeared to be planning to return home the same day, and that he left Dandong seen off by China's top political adviser, according to China's Xinhua news agency. Korean media are reporting the event as a surprise trip, with the focus on the newly opened bridge as the route of entry.