Ask what Korea is talking about.

North Korean leader Kim Jong-un made a surprise visit to China's border city of Dandong on Saturday, crossing a newly opened bridge and meeting Beijing's top political adviser, Yonhap and Korea Times report. State media said Kim vowed to advance the two countries' longstanding relationship 'forged in blood,' with the trip coming days before the anniversary of Chinese troops entering the 1950-53 Korean War. The visit also inaugurated the new cross-border bridge and aimed to expand economic cooperation, according to KBS World and Korea Times. Korean outlets frame the trip as reaffirming historic 'blood ties' while Beijing watches Moscow, with an editorial urging that the visit 'must lead to restraint' on the peninsula.