Grandma pointed to the abacus in her grandfather's hand and said with a smile: "This is how the red corn seeds are inserted after the wind, but at that time, each string was ten, and when the first string of ten was not enough, one was added to the second string." The abacus your grandfather was holding in his hand was later improved. ”

I lifted my feet out of the cold water, put on my shoes and walked to my grandfather's side, reached out and touched the old abacus, and said to myself, "I think this is an ordinary abacus, nothing special." ”

Grandpa smiled: "Li Kui's plate axe, Guan Gong's Qinglong Yanyue knife, are all because of people

"I Went Ghost Hunting with Grandpa" Chapter 307 Flowing Smoke is hitting in the hand, please wait a while,

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