sǐ​xīn​yǎn​r

one-track mind

死心眼儿 (死心眼兒) sǐ​xīn​yǎn​r
one-track mind noun
inflexible and unable to adapt or consider alternative ways of thinking
stubborn
obstinate and refusing to change one's mind or position despite persuasion

Frequency

Movie subtitles
0.030 per million appears in 0% of films
Written text
0.040 per million

Sources

Definitions
CC-CEDICT