China Live opened this spring with the promise of elevating high-end Chinese food in San Francisco. Its new haute cuisine restaurant Eight Tables, scheduled to open next month, is firmly centered on that goal. The 30,000-square-foot food hall and retail complex at 644 Broadway opened in March after three years of design and development, complete with a 25-seat Oolong tea cafe, 120-seat restaurant and bar and a rooftop bar. Eight Tables, located above China Live's main restaurant space, is one of…