K-pop idol band JYJ’s Yoochun was sighted at Incheon International Airport before flying out to Beijing, China for an upcoming concert to be held on Aug. 23. JYJ is now on its Asia concert tour “The Return of The King” that kicked off in Seoul on Aug. 9 shortly after the release of its second studio album “Just Us” on July 29.　The trio will head to Vietnam, Malaysia and Thailand after China.　(laeticia.ock@her...