It is quite different from Hainan. Old City Wall, terra cotta Warriors, should be the most well-known places of the city. There is a Muslin community in the city center, in which there is a snack street. I miss the food here when I go to other cities for a while. I live here 6 year. I will not be excited while talking about this city, I just get used to it and feel it is a comfortable place for me. :-) ANy problem about Xian, glad to help. :-)