主流 On the HSK 6 vocabulary list, at CEFR level C2. zhǔliú ㄓㄨˇ ㄌㄧㄡˊ main stream (of a river) fig. the essential point main viewpoint of a matter mainstream (culture etc) 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