出神 (chū shén): Be spellbound (Verb) — Meaning & Stroke Order

He was lost in thought gazing at the rainy scene outside the window and didn't hear a word I said.

He was spellbound, gazing at the abstract painting as if deciphering its mysteries.

Why are you lost in thought again? Did you hear what I just said?

He was not lost in thought; he was just concentrating intently on this complex issue.