... that inspired by the short story "Qingfeng", Mao Zedong likened the United States to a ghost?
Source: Yang, Kuisong; Mao, Sheng (2016). "Unafraid of the Ghost: The Victim Mentality of Mao Zedong and the Two Taiwan Strait Crises in the 1950s". China Review. 16(1): 2.