tuh-tuh-siǔⁿ厾厾想

to be lost in thought

to be lost in thought; to meditate

English Wiktionary, “厾厾想” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%8E%BE%E5%8E%BE%E6%83%B3 · confidence: Medium (Wiktionary)