Here is a story about an old man live on the mountain.
[[Start]]
<img src = "http://maggie3555.github.io/Everest_North_Face_toward_Base_Camp_Tibet_Luca_Galuzzi_2006.jpeg">There is an old man live on a mountain. And he sends you an invitation to visit him.
Will you accept it?
[[Yes]]
[[No]]Ok, if you accept the invitation. What gift do you want to bring?
[[A bottle of wine]]
[[Some flowers]]
[[A book]]Ok, you don't need to visit him.
[[Once upon a time...]]