qiǎn​cháng​zhé​zhǐ

to scratch the surface

浅尝辄止 淺嘗輒止 qiǎn​cháng​zhé​zhǐ
to scratch the surface
to stop after taking just a sip; to gain only a superficial knowledge of something or give up after a brief attempt rather than studying it deeply

Frequency

Movie subtitles
0.090 per million appears in 0% of films
Written text
0.306 per million

Sources