tsuan-tsù專注

to be absorbed in

to be absorbed in; to concentrate completely on; to devote oneself to; to focus all of one's attention on

English Wiktionary, “專注” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%B0%88%E6%B3%A8 · confidence: Medium (Wiktionary, Hokkien)