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In page Dragon Lady:

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Since the 1930s, when "Dragon Lady" became fixed in the English language, the term has been applied countless times to powerful East, Southeast and South Asian women[citation needed], such as Soong Mei-ling, also known as Madame Chiang Kai-shek, Madame Nhu of Vietnam, Devika Rani of India, and to any number of Asian or Asian American film actresses. That stereotype—as is the case with other racial caricatures—has generated a large quantity of sociological literature.