This is a long story. Quoting a passage from official website should explain your problem: Phoenix is a wonderful ancient city; Every day, there are countless encounters here; Someone came to Phoenix to start a new life by charging and storing energy; Some are frustrated and intend to forget the past; Some are sweet trips to appreciate the beautiful scenery of Xiangxi; Some are calling on friends to leave footprints of youth together; No matter what the purpose of your visit to Phoenix is, it can always give you unexpected surprises. ...