A 300-year-old Chinese Abacus Ring, Qing Dynasty, c. 1700s. Each rod has 7 beads to help calculate business transactions. Photo via https://t.co/IdXsEKMSpO pic.twitter.com/jA29oeOZbZ— History Defined (@historydefined) May 17, 2022
A 300-year-old Chinese Abacus Ring, Qing Dynasty, c. 1700s. Each rod has 7 beads to help calculate business transactions. Photo via https://t.co/IdXsEKMSpO pic.twitter.com/jA29oeOZbZ
No comments:
Post a Comment