HSK 7-9
本性
běnxìng名
natural instincts; nature; inherent quality
困难最能看出一个人的本性。
Kùn nán zuì néng kàn chū yí gè rén de běn xìng.
Hardship best reveals a person's true nature.
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Appears across levels (7-9) in the HSK 3.0 word list.