I visited this new restaurant today and was very favorably impressed by the noodle dish I had (youpoche mian="noodles with sizzling oil") and a cumin lamb "burger" (roujiamo).
It's a small place with a compact menu really focused on Xi'an/Shaanxi and other North China dishes. All the noodles and sauces are made in house. I've scanned the menu and posted it as a set on Flickr.
Terra Cotta Warrior
2555 Judah St. at 31st Ave.