Meaning of tiān xìng:
tiān xìng
天性
Noun
nature; innate tendency
Tā de hàoqí xīn shì nányǐ gǎibiàn de tiānxìng.
他的好奇心是难以改变的天性。
His curiosity is an innate nature that is hard to change.
Tā yǒu yī zhǒng lèguān de tiānxìng.
他有一种乐观的天性。
He has an innate tendency to be optimistic.
