As Rick points out, go it alone if you can. We had family to take us around & to book things locally. A trip to Xi'an - flights to/from Shijiazhuang & Beijing, 5 star hotel for 2 nights, van + driver + guide for 2 days, and admissions to everything was only $600.
Randy: Did you try Moutai?
In the hutong, a 10 minute walk south from Tiananmen:
Ian