Hi, My wife is Chinese/Canadian and speaks Mandarin. We plan to travel during daylight hours from Sanya to Changqing by train, over 7-days period from 25 Feb 2010 with stopovers in several cities along the route. Is it possible to purchase a ticket single in advance to cover such a journey? Advise please interesting cities, Train numbers and Soft seat fares if possible, and any regional holidays or events during that period. Thank you.