Travellers look at a billboard showing information of a new high-speed train line for the 2018 PyeongChang Winter Olympic Games, at Seoul station in Seoul on December 22, 2017. The railway, part of South Korea's KTX network, cuts travel times significantly, reaching Jinbu - the station for the snow sports in Pyeongchang - in one hour and 20 minutes from Seoul, and another 16 minutes to Gangneung on the east coast, where ice events will take place. / AFP PHOTO / JUNG Yeon-Je