HSK 7-9
内向
nèixiàng形
reserved (personality); introverted; (economics etc) domestic-oriented
他性格内向但很善于倾听。
Tā xìnggénèixiàng dàn hěn shànyú qīngtīng.
He is introverted but listens very well.
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Appears across levels (7-9) in the HSK 3.0 word list.