Passengers and railway staff pose for a picture beside a train at the Beijing West Railway Station to mark the 10th anniversary of the opening of the Beijing-Guangzhou high-speed railway.  A total of 1.69 billion passenger trips have been made on the railway since it went into operation 10 years ago, official data showed. Running at 350 km per hour, the 2,298-km rail link is the world’s longest high-speed railway.Xinhua