“以匾研史,可当佐证;以匾研诗,可得诗眼;以匾学书,可行笔髓。”匾额虽小,却融汇了辞赋诗文、书法雕刻、绘画篆印等丰富的文化信息,是中国文辞之美、书法之美与工艺之美的集大成者,具有珍贵的艺术价值和历史价值。在历史的长河中,那些小小的匾额,犹如穿行的一叶叶扁舟,让古人与来者相遇,让文化和思想相撞,留下了诸多涟漪。在如今的天安门跟正阳门之间,曾经矗立着一座“国门”。随着朝代的更迭,这座城门上的匾额也多次更换,由“大明门”匾额变为“大清门” “Plaque history, can be evidence; to study poetry, poetry can be obtained; to plaque school books, practicable pen. ” The plaque is small, but blend of Ci poetry, calligraphy and sculpture, painting seal printing And other rich cultural information, is the beauty of Chinese diction, the beauty of calligraphy and the beauty of technology set master, has precious artistic value and historical value. In the history of the river, those small plaques, like a leaf boat floating through the line, so that the ancients and comers, so that the collision of culture and ideas, leaving many ripples. Between today’s Tiananmen Square and Zhengyangmen Gate, there stood a “national gate.” With the change of dynasties, the plaque on the gate also changed several times, from “Daming Gate” plaque to “Daqingmen”