Why can go to Tibet purify the soul?

It seems that it has been said since ancient times that going to Tibet can cleanse the soul of the earth. According to Arab geographers, one of the oddities of tubo is that whoever goes there will turn into a happy face for no reason and stay there until they leave.

Why can have this kind of effect, can this be the reason that this place is too bitter, let a person produce contrast, especially small place person, see by comparison or own home is good, so the mood is happy.

You see, some people say it’s beautiful, it’s comfortable, it’s all good, and they don’t want to leave, but if you really want him to stay and work and live here, then you don’t want to leave. You say you’re persecuting him, like killing him.

On the contrary, if a lot of people scold a place, saying that it is suffering a lot and living a hard life, people suffer discrimination without dignity and live a very unhappy life here, such a place is to break the head to go, many people really do not want to go back there, no matter how hard it is to find a way to stay. People seem to be so cheap, the nature is so