xīn shì
n. weight on one's mind, worry
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Simplified stroke orders are based on the 'Standard of National Commonly-used Mandarin Chinese Characters (现代汉语通用字笔顺规范)', issued by the China National Language and Character Working Committee (国家语言文字工作委员会) on April 7th 1997. Traditional stroke orders are based on information issued by the Taiwan Ministry of Education.
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tā hǎo xiàng yǒu xīn shì , cóng yí jìn lai jiù méi shuō guò huà
phr. He seems to have something on his mind because he hasn't spoken a word since he came in.