Catch up on some of SCMP’s biggest China stories of the day. If you would like to see more of our reporting, please consider subscribingUS Secretary of State Marco Rubio has sent a congratulatory message for China’s National Day, reinstating a tradition to mark the occasion before October 1 arrives in the United States. The US military’s expanded joint cyber and AI-integrated exercises with Japan and South Korea pose a risk to regional security, a Chinese military commentary has warned. Passengers wait for trains at Hangzhou East Railway Station on April 30, in Hangzhou, Zhejiang province. Photo: VCG via Getty ImagesVisa-free travel abroad and free toll roads at home are expected to fuel a surge in travel by Chinese citizens during an extra-long holiday starting this week, in what analysts call a boon for the service economy.