若有所思

Explanation: If: if. If thinking about something. Describe meditating look. 　　Usage: Verb-object type; as predicate, attributive, adverbial; describe the expression 　　Source: Tang Chenhong "Everlasting Regret Biography": "Jade Princess loss back up, thoughtfully." 　　Examples: Wei Wei, "Oriental" Part III Chapter 14: "Week servant sighed, ~ said." Thesaurus:  fidget, swoon, mind stupefaction, emotions which churn inside like the flow and ebb of tide accident, show appearance and give soul to, have a guilty conscience, Wavering Shook, _set_ insomnia with restlessness, be [sit, stand, walk] on [upon] thorns, arrear, delay, fool around, fidget, loaf, care