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South Korean Unification Minister Cho Myoung-gyon (4th L) and Ri Son Gwon (5th L), chairman of the Committee for the Peaceful Reunification of the Fatherland (CPRF) of the Democratic People's Republic of Korea (DPRK), pose for group pictures after the launching ceremony of the joint liaison office in DPRK's border town of Kaesong, Sept. 14, 2018. South Korea and the DPRK have opened a joint liaison office Friday for round-the-clock communications between the two sides. (Xinhua/Joint Press Corps)