中国少数民族在本世纪所经历的最重大事件，首先当数社会制度改革。当历史行进到二十世纪五十年代，中国各个民族的社会发展状况尚参差不齐。在经过大规模的艰苦、认真的社会历史调查以及初步统计分析的基础上，人们发现中国少数民族的社会发展状况，呈现出如下四种局面：... The most significant event that the Chinese ethnic minorities have experienced in this century begins with the reform of the social system. As history has progressed to the 1950s, the social development of all ethnic groups in China is still uneven. After a large-scale, arduous and serious investigation of social history and preliminary statistics and analysis, people have found that the social development of ethnic minorities in China presents the following four situations: ...