Best restaurant in China Town (San Francisco)?

I'm going to San Francisco in about 2 weeks & my parents really to go to China Town & eat at an Authentic (clean, no offense) Chinese restaurant there. any suggestions from anyone that lives in San Francisco or been there? & also can you give me the name & address of that restaurant you suggest please, thank... show more I'm going to San Francisco in about 2 weeks & my parents really to go to China Town & eat at an Authentic (clean, no offense) Chinese restaurant there. any suggestions from anyone that lives in San Francisco or been there? & also can you give me the name & address of that restaurant you suggest please, thank you

PS. if possible, cheap as well, if not, its O.K.
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