Shaanxi was called "Qin" in ancient times. It was the birthplace of Qin Shihuang's unification of the six countries, so it can be named "Ancient Qin Restaurant".
If you feel that Gu Qin is too old, you can also name it "Xin Qin Restaurant".
Revolving around the Qin Dynasty and its cultural heritage, it can also be named "Qin Yun Restaurant" or "Qin Ding Restaurant".
Just think of these, I hope they can help you.