BTS has returned to the stage after nearly four years but China is conspicuously absent from the group's world tour, which kicked off Thursday (April 9).<br /><br />That absence comes down to an unofficial ban triggered by Seoul's deployment of a U.S. anti-missile system. <br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
