In December 2008, construction began on a capacity-expansion project to a new pair of electrified tracks from Hengyang to Nanning, which will create a three-track line of between Hengyang and Liuzhou and a four-track line of between Liuzhou and Nanning [REF].
, the southern-most section of the Xianggui Line, from Nanning to Pingxiang on the Vietnamese border, is undergoing capacity expansion to accommodate high-speed trains [REF].