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Marxist historians in China have described Chinese ancient society as largely feudal. The "fengjian" system is particularly important to Marxist historiographical interpretation of Chinese history in China, from a slave society to a feudal society. The first to propose the use of this term for Chinese society was the Marxist historian and one of the leading writers of 20th-century China, Guo Moruo in the 1930s. Guo Moruo's views dominated the official interpretation of historical records, according to which the political system during the Zhou dynasty can be seen as feudal in many respects and comparable to the feudalistic system in medieval Europe. Guo Moruo based his application of this term on two assumptions: