[請益] 唐朝老太太拿的鐵杵是什麼鐵
對岸有個人學李白的故事,
去磨鐵杵
不過他拿的是鏍紋鋼
但是磨了幾年,石頭都幾條深痕了
鏍紋鋼也磨光滑了
好像也沒磨細
https://i.imgur.com/lBi4QN9.jpeg
突然想到
那唐朝老太太拿的會是什麼鐵
好磨嗎? 磨了多久啊?
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