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四、劲峭期：自武乙至文武丁，约十七年。文武丁锐意复古，力图恢复武丁时代之雄伟，书法风格转为劲峭有力，呈现中兴之气象。在较纤细的的笔画中，带有十分刚劲的风格。  五、严整期：自帝乙至帝辛，约八十九年。书法风格趋于严谨，与第二期略近；篇幅加长，谨严过之，无颓废之病，亦乏雄劲之姿。 甲骨上细瘦的笔迹，也受到刀刻的影响。占卜时常用“是”或“否”刻于龟甲中央纵线两侧，自此中线向左右书写，故两旁对称和谐，具有行款对称之美。且契刻后，大小字分别填上墨朱，或正反面分填朱墨，更深具艺术之意味，堪称书史奇迹。 [[File:U=2374655760,3503477104&fmdfghj.jpg|缩略图|甲骨学家|左|[https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1601440517469&di=f98f9e2bccaa19d6d258765462e1914f&imgtype=0&src=http%3A%2F%2F5b0988e595225.cdn.sohucs.com%2Fq_70%2Cc_zoom%2Cw_640%2Fimages%2F20191104%2F070b0a692bee40838caff3f38b00f93d.jpeg 原图链接][https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E7%94%B2%E9%AA%A8%E5%AD%A6&step_word=&hs=0&pn=1&spn=0&di=141350&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=1434574027%2C180011913&os=859796215%2C12062156&simid=3466601534%2C250174013&adpicid=0&lpn=0&ln=1684&fr=&fmq=1601430426364_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2F5b0988e595225.cdn.sohucs.com%2Fq_70%2Cc_zoom%2Cw_640%2Fimages%2F20191104%2F070b0a692bee40838caff3f38b00f93d.jpeg&fromurl=ippr_z2C%24qAzdH3FAzdH3F4_z%26e3Bf5i7_z%26e3Bv54AzdH3FwAzdH3Fnc899adnm_8890n8&gsm=1&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 来自 百度 的图片]]]