Xi'an is a popular place for travelling,but I love the north of Shaanxi!
From Xi'an to the north city Yan'an or Yulin,by bus is a good choice,you can see the scenery at the two sides---Yellow Soil Tableland.Amazing!!!

If you want to travelling in the whole province from Beijing,the route can be as Beijing---Xi'an---Huangdiling---Yan'an---Hukou waterfull---Yunlin.
In Xi'an,about three days.One day in the downtown,the second day go to Warriors and Huanqingchi,the third day go to Famen Temple and Qian Tomb.
The fourth day,from xi'an to Huangdiling,about 2 hours,just need a half day,and then take a bus go to Yan'an in the evening.
From yan'an to Hukou waterfull,there was travelling bus,very convenience!Then you can travel in Yan'an---Red City!
From Yan'an to Yunlin,you can take a bus!and Yulin is a special city,original Great Wall and Hongjian Nuor in Shenmu,exciting!