xīn​xìng

temperament

心性 xīn​xìng
temperament noun
a person's innate character, disposition, or personality
mind-nature noun
the fundamental or intrinsic nature of the mind, often in a spiritual or Buddhist context

Frequency

Movie subtitles
0.150 per million appears in 0% of films
Written text
2.03 per million

Sources

Definitions
CC-CEDICT