RT: The Cistercian numerals are a forgotten number system, developed by the Cistercian monastic order in the early thirteenth century, much more compact than Arabic or Roman numerals: with a single character you could write any integer from 1 to 9999 [more: https://buff.ly/2LDj1Kg] https://t.co/tehyfxmy2n
RT：西多会数字是一个被遗忘的数字系统，由 13 世纪早期的西多会修道院开发，比阿拉伯或罗马数字更紧凑：使用单个字符，您可以写出 1 到 9999 之间的任何整数 [更多：https://buff.ly/2LDj1Kg] https://t.co/tehyfxmy2n