It is planned to go to Lanzhou on April 30th, and to Gannan on May 1 May 5th. What travel agency in Lanzhou is more reliable? Can you give me some advice?

Gannan will still have a little altitude sickness, but just pay attention to adjustment. Remember to drink plenty of water, don't move too fast, and bring sunscreen and lip balm, where ultraviolet rays are strong! In addition, the temperature difference between morning and evening in Gannan is relatively large. Remember to bring two thick coats! As for travel agencies, I strongly recommend Lanzhou Golden Desert International Travel Service. They specialize in Gannan, because I joined their Gannan photography group during the Spring Festival. Both tour guides and photography teachers are very professional. I have been with them for several times, and the service is very good, which is worth recommending! I hope these are helpful to you!