Have you ever heard of the Korean restaurant, "Kim Rice"?
A lot of branches in Xi'an, which I have eaten in the Chang'an Interchange down to Xiaozhai,
Opposite the Conservatory of Music, there is a Dex, in the direction of Xiaozhai walk 5 meters you can see.
It's called "Golden Rice"! It's 14.603.323.215 ==== many buses.
There's another one a bit farther away, at the crossroads of Wu Jia Tomb, which is not easy to find.
You try that one, it's good. 100 RMB for 4 people is OK.
Recommended: stone pot bibimbap 15 yuan
squid with rice 15
there is also a soup is good, I forget the name, very fresh flavor, 15 yuan or so.
I like it very much, the store is clean, it's good.
I hope this helps!