ReadWriteQuiz
Chinese dictionary
derogstrong in appearance but weak in reality; outwardly strong but inwardly weak; fierce of visage and faint of heart; strong on the outside but dry on the inside
反动派都是外强中干的纸老虎。
All reactionaries are paper tigers, which look strong, but are really weak.
我觉得我现在是“外强中干”。
I am "outwardly strong and inwardly weak".