景泰七年速来蛮事件究因李德宽景泰七年（１４５６）正月丁亥，明朝都城北京发生一起凶杀案，事涉回回。或许忌虑民族感情，近现代以来回、汉学者均讳谈此事，当代两家编辑出版的《中国回族大辞典》中未曾提及。一些较权威的出版物亦予忽略。事出有因，视而不见并不是合适... Jingtai seven years to speed quite a case study due to Li Dekuan Jingtai seven years (1456) the first month Dinghai, Ming capital city of Beijing, a homicide occurred, the matter involved back. Perhaps the feelings of the nation may be discouraged. Since the modern times, the Han scholars have tabooed the issue, and the “Chinese Hui Dictionary” edited and published by two contemporary generations has not been mentioned. Some of the more authoritative publications are also ignored. There is a cause, blind and not suitable