Not immediately evident

坚

Jiān Solid, Strong
simplified the two lines were 臣　. 臣eye+又hand＋土earth＝strong bowman at the city wall, earthworks, as the idea of STRONG FIRM SOLID
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修

xiū Repair
Hand Hammer 攵pu1 + Strips of Cloth彡shan1  + ford a river. = Efforts taken to REPAIR FIX a thing
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