Vice Premier Li Qiang says Beijing is ready to improve strategic communication with Pyongyang as top female diplomat Choe Son Hui visits a second time in less than one month. Also on East Asia Tonight: Hong Kong activist Nathan Law denied entry to Singapore; South Korea scrambles to restore government sites after data centre fire; Chinese tourists enter South Korea visa-free starting today; Japan protests China's ocean research in EEZ off southwest island chain; Osaka Expo hits break-even point