[of calligraphy] vigorous and powerful ? 著名書(shū)法家，當(dāng)場(chǎng)揮毫，～。The famous calligraphers wielded their writing brushes in bold,vigorous strokes on the spot.
力透紙背li tou zhi bei
?(of calligraphy or handwriting) the strokes are powerful enough to penetrate the paper—vigorous ?(of literary works) deep and powerful