May I know how to book the bus sleeper tickets from Shangri la to Kunming, we are planning to stay in Shangri la one night and take the night sleeper bus to Kunming the next day.

BTW we plan to stay in Lijiang for 3 nights before we are going to Shangri la. date of travel early April next year.

Can we book on line? If possible, is it reliable ?

thank you