歐洲人磨刀/劍：一手拿刀，另一手用磨刀石，中國人把磨刀石固定一個台階，用雙手磨刀。）

歐洲人磨刀/劍：一手拿刀，另一手用磨刀石，中國人把磨刀石固定一個台階，用雙手磨刀。）(Europeans sharpen knife/sword: one hand holding knife, while the other hand using sharpen stone. Chinese fix the sharpening stone one a stage, using both hands to sharpen knife.)

https://www.youtube.com/watch?v=XM8IQ90v_MQ