Walker was a scholar of the disciplinary system in China's civil service in imperial times, and a staunch liberal. He didn't buy any of the Communist line, and so got on well with Liu, who had also failed to be convinced in his "studies" under the CCP. Walker later served as US ambassador to Korea, but remembered his colleagues in Taiwan fondly.
吳克研究的是中國御史大夫制度，也是個堅強的自由主義信徒，對共產黨那一套「畫餅充饑」的「人民萬歲」完全不買帳，所以和曾在共黨陣營「實習」失敗的劉紹唐很談得來。