As China tries to build a domestic wine industry and grapples with the inevitable growing pains, one region is adopting measures intended to guarantee quality. Ningxia, which has grabbed attention as a promising spot for Cabernet Sauvignon-based blends, recently introduced a winery classification system. Modeled on Bordeaux's 1855 Classification, but with updated rules and mandatory renewals every two years, the system ranks wineries in five levels. The organizers hope the approach will recognize and encourage Ningxia wineries that consistently produce high quality wine, and assist consumers in making informed selections. Wine Spectator's Liz Thach reports.