Appreciation and assessment of calligraphic works should be performed in the respects of their contents and in the respects of their shapes . For the former , attention should be drawn to whether the works reflect the spirit of the times , whether they are healthy , and whether they display well the sentiments . For the latter , five scripts are involved , viz , the seal script , the official script , the regular script , the running script and the cursive script . In the respect of the use of the brush , it involves the straight strokes , the round strokes , the mid-tip , the side-tip , the hidden tip , the exposed tip , etc .,

　　In the respect of the structure of the words , it involves the insertion , the avoidance , the shifting , the balance , the symmetry , etc . In the respect of the arrangement of words , it involves the appropriate proportions of the dense and sparse , the dark and blank , the staggering of the big and small sizes , the long and short , and thick and slender strokes , etc . In the respect of the use of ink , it involves the thick and thin , the wet and dry , and the light and heavy ink . To be specific , we should see whether the calligraphist is very skillful and whether he does well in all the above respects . 　

　　Also attention should be drawn to whether the calligraphy exhibits a force and vitality . A good calligraphical work should be written with a force capable of “penetrating the paper” and exhibit a vigor and charm . Particularly the calligraphy of running script and cursive script and of words of very large sizes should exhibit a powerful momentum and an enduring charm . Their strokes should be appropriately thick or thin , long or short , straight or bending , extending or not extending , rising or falling . In fine , It should have powerful momentum and a rhythm so as to be appealing and to have a lasting charm .