亂 Simplified: 乱 On the HSK 3 vocabulary list, at CEFR level B1. luàn ㄌㄨㄢˋ in confusion or disorder in a confused state of mind disorder upheaval riot illicit sexual relations to throw into disorder to mix up indiscriminate random arbitrary Where 亂 is used Example sentences and grammar articles using 亂 Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0 国际中文教育中文水平等级标准, 中华人民共和国教育部, MIT