- 心事重重 [xīn shi chóng chóng]
- be preoccupied by some troubles; be cumbered with care; be laden with anxiety; be weighed down with care; care-laden; gloomy with worry; There are too many problems on (one's) mind.; (weight of the) world on one's shoulders; world on one's back; with a heavy heart
Susan is in a thoughtful mood.
She seemed preoccupied all the time I was talking to her.