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FILE--Hands in pockets, President Nixon strolls across a bridge in a typical Chinese setting at Hangchow, Feb. 26, 1972, with Chou En-lai and wife Pat Nixon in center, rear. Reagan got chopstick lessons. Bush was warned not to eat pickled fish. Pat Nixon studied Chinese phrases. To prepare for this week's trip to China, President Clinton has been cramming, reading six books and being briefed on how to avoid protocol gaffes seen in the past. (AP Photo/Staff) Original Filename: CHINA_ETIQUETTE_P13.JPG