September 2128, 2000 food Wei Cool Yin-Yangming: Inside Bryn Mawrs upscale Chinese restaurant. photo: Michael LeGrand by Maxine Keyser Yangming 1051 Conestoga Road, Bryn Mawr, 610-527-3200. Mon.-Thu., 11:30 a.m.-10 p.m. Fri.-Sat., 11:30 a.m.-11 p.m. Sun., 2-10 p.m. Wheelchair access. Reservations…