HSK 7-9
持之以恒
chízhī-yǐhéngto pursue unremittingly (idiom); to persevere
学习外语需要持之以恒。
Xué xí wài yǔ xū yào chí zhī yǐ héng.
Learning a foreign language requires perseverance.
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Other HSK words sharing a character
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Appears across levels (7-9) in the HSK 3.0 word list.