Hi, can you advise the best travel options using high speed trains or flights to the below itinerary

1. Take bullet train from Xian North Railway Station to Lanzhou West Railway Station.
2. Take bullet train from Lanzhou West Railway Station to Jiayuguan South Railway Station.
3. Take the normal speed train from Jiayuguan Railway Station to Yinchuan Railway Station.
4. Take the direct flight from Yinchuan Hedong Airport to Urumqi Airport.
5. There is no direct train or flight. You can take a train from Kashgar to Liuyuan Railway Station first. Then transfer to a coach to Dunhuang.
6. Take the direct night train from Dunhuang Railway Station to Xian Railway Station.