A “Hexie” bullet train stops at the Xuzhou station in Jiangsu province, Jan 3, 2014. [Photo/VCG] Trains on the Beijing-Shanghai high-speed railway will be traveling at up to 350 kilometers per hour around this year’s National Day, Beijing-based Caixin online reported. The speeds of “Hexie” and “Fuxing” class bullet trains will both improve, and the time…