Hello, I am in Nyingchi. I am most familiar with Basongcuo. Lhasa definitely does not have a shuttle bus to Basongcuo. Even if there is, it should start from Nyingchi. There is no tourist bus. Usually it is a chartered car or an appointment in advance. Carpooling, you can ask when you arrive<br/><br/>If you are with a group, then go from Lhasa to Nyingchi and play Basongcuo on the way. It is definitely impossible to only have Basongtso in the itinerary. Basongtso is not like Namtso, there is no one-day tour For the itinerary, you can only follow the group for a few days at a time. When you come down from Lhasa, you must include it before going back<br/><br/>If you are traveling with friends, it is best to charter a car. The distance between each scenic spot in Tibet is very long, and it is impossible to follow the group at any time Get out of the car to take pictures, only a chartered car is the most casual way to play, or make an appointment in advance to carpool and contact the right teacher. In fact, the price-performance ratio you finally calculated is very high! <br/><br/>Hope it helps you!