这本《诗书—牛尔惠书张贤亮古估诗词》是宁夏书法家牛尔惠书写的张贤亮的古体诗词，以楷书为主，兼有行书、篆书、隶书和西夏文诸种书体，主要以整张的形式展示书法家的手笔，夹有扇面、对联等多种丰富的形式。书写的内容是张贤亮在生活中创作过的几十首古体诗词。书中同时并附有张贤亮古体诗词的原文。This book is the calligraphy made by Niu Erhui-calligrapher from Ningxia for the ancient poems written by Zhang Xianliang, which is mainly written in regular script form, with many other chirographies such as cursive handwriting, seal character, clerical script and Tangut script. The book is mainly to present the handwriting of the calligrapher in the form of full paper, with various other forms such as fan surface and antithetical couplet. The content is dozens of ancient poems created by Zhang Xianliang in life, and the book has also provided the original ancient poetries by Zhang Xianliang.