强中自有强中手 however strong you are, there's always someone stronger.; among the strong there is always a stronger.; catch a tartar; diamond cut diamond 强中自有强中手, 能人背后有能人。 however strong you are, there's always someone stronger.; for every able person there is always one still abler
外强中干 be outwardly strong and inwardly weak; apparantly rich and successful, but actually in financial trouble; be fierce of visage and faint of heart; be outwardly strong but inwardly brittle; be strong in appearance but weak inside; be strong only in appearance but brittle inside; be strong without but feeble within; gild the pill; outwardly flourishing, inwardly dried up 一切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