I've never had a bad meal or service. It happens at any restaurant. There is no better ethnic food center in the metro Atlanta area, but you'll need a car to get up and down the road. The sidewalks are nonexistent, and the drivers are very competitive. Authentic cooking from the province of the same name in China.
Portions are huge and the menu is authentic.
My favorites are the stir-fried string beans, steamed fish with black bean sauce, garlic chicken, and the hot sesame noodles. Entrees are around 7 dollars each. Further north on Buford Highway, about a half mile inside the I-285 perimeter, is the Monterey Mexican restaurant. I believe it was the first Mexican restaurant in the metro area. Again, authentic cooking, huge portions, reasonable prices.