For those who bored of the daily communte to work on the train, why not consider a train journey from Tibet to Hong Kong? It lasts half a week, as in 84 hours.
Lhasa, Xining, Golmud, Lanzhou, Xian and Chongqing provide the scenes. The Qinghai-Tibet Railway traverses the countryside and the starting point for the adventure is Lhasa. If you spend 3.5 days on a train in China you will start to understand the country and you will feel like you have shared a journey with millions of people.