Explain

And there is a bug in the first chapter, about the weight of the knife, at the beginning it was written more than three kilograms, and then I thought

The word "kilogram" is really an eyesore, so I put it

"Gong" was removed, and the number has not changed, it has become three catties, and now I have found out that this problem o(โ•ฏโ–กโ•ฐ)o, has been changed to six catties.

"Chop a knife first" explains that it is being hit by hand, please wait a moment,

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