孜孜不倦 zī zī bù juàn 🔊 lit. diligent and never slacking (idiom) + Keep this word Meanings zī zī bù juàn lit. diligent and never slacking (idiom); continuous concentrated effortassiduous (in study)to concentrate Its characters 孜zīused in 孜孜[zi1 zi1]不bùnot; noHSK 1倦juàntired; weary; fatigued