time:2020/11/16 16:46:12
look number:次
ruler
General ancient ruler at one end have-small round hole, used for wire rope. Some are engraved, some are engraved on both sides. The front multi-scale unit mark, each degree mark, or by the short line, or by the dot to mark, the ruler surface has "100 children thousand grandchildren "and so on auspicious words and the Yin engraved has the moral auspicious exquisite pattern.
Abacus development
As the old saying goes ," when an abacus rings, gold is ten thousand ." Abacus is the earliest calculator in the world, from the Tang Dynasty first appeared in poetry and Fu, to the Song Dynasty "Qingming Shanghe Tu" the earliest physical objects, lasted more than ten centuries later gradually fade out of modern society, Abacus, once proud of China's ancient invention ," helpless "into the old Dong.
Children's
From the Qing Dynasty to the Republic of China, the various styles of children's chairs and beds are now basically hard to find. Here ,30 precious items collected by collectors for many years are displayed, from which we can see the children's articles used in the old times, which are convenient, scientific and practical, and are also rare ready-made textbooks for modern design.
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