Literary knowledge: Which is the earliest mathematical book in China?

Popular videos

• The child walked into the yard and was pecked and cried by the big cock. Grandpa picked up the stick and killed the chicken directly

• This acting skill has surpassed most domestic TV dramas, right [poor]
• Another coffee dispute, the man finally broke down, slapped and punched the female customer
• This gesture is too scary
• The woman wanted to prove that she was right. As a result, the Dayi Group destroyed the owners of the whole community!
• The man held a "laser gun" and aimed at the flies on the ground for a second