I don’t know when it started, but taking selfies has become one of the essential skills for people exploring famous mountains and great rivers. And for outdoor sports enthusiasts who venture into breathtaking landscapes seen by only a few, finding a “passerby” with decent photography skills to take a commemorative photo for them is obviously even more impossible. As a result, taking selfies with a smartphone has gradually become one of the “must-haves” for outdoor sports enthusiasts.
