牛心 Save Sign in to save words niúxīn ㄋㄧㄡˊ ㄒㄧㄣ mulishness obstinacy Character by character 牛(niú)surname Niu 心(xīn)heart Words that sound like niúxīn 留心 牛性 A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0