On March 1, the 70 year old father of Mr. Chen, a citizen with mild Alzheimer’s disease, took the high-speed railway alone to Zhongshan, Guangdong. He got off the bus at Changsha south station and lost his way. After continuous analysis and tracking for one hour, the police of Changsha south station police station of Changsha Railway Public Security Department finally found the old man who got off the wrong bus and lost his way on the elevated waiting floor of Changsha south station, And help...