专注
zhuānzhù · HSK 7
to focus; to concentrate; to give one's full attention
🎯 专 (exclusive, single) + 注 (pour attention) = pour all your attention onto one thing
注 is the same character as in 注意 (pay attention) and means to pour or inject; 专 means single or exclusive. Together: channel attention exclusively, with nothing else leaking in.
注 — water 氵 + master 主 (phonetic)
A semantic-phonetic compound: 氵 (water) gives the meaning of pouring or flowing, while 主 supplies the sound. The original sense was 'to pour water in,' which extended to 'concentrate, focus' (as in pouring attention) and 'to annotate' (pouring explanation into a text).