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English

Beginning about 3500 BC, clay tokens were gradually replaced by number signs impressed with a round stylus at different angles in clay tablets (originally containers for tokens) which were then baked. About 3100 BC, written numbers were dissociated from the things being counted and became abstract numerals.

Chinese

从大约前3500年开始,粘土记号逐渐被数字符号取代。 这些数字符号是使用圆的笔针刻在粘土块上,然后烧制而成的。 大约前3100年,数字符号与被计数的事物分离,成为抽象的符号。