在很久以前,赫哲人是以“数食达巴哈鱼头”计年的.然而,深入浅出于茂密的山川林地,川流不息的江河湖泊间,没有相当的天文历法知识是万万行不通的,日复一日的渔猎生产活动,使赫哲人懂得,仅有计年知识并不能解决渔猎生产中的所有时空问题,何况数食达巴哈鱼头尚有许多缺憾,由是之故,木制圆盘日历便应运而生了. A long time ago, the Hezhe people counted on the basis of “counting the head of the Daba Ba Head.” However, without knowing the astronomical calendar, rivers and lakes with abundant mountains and rivers lay a solid foundation for profound understanding in simple terms. Day after day of fishing and hunting activities, He Zhe people know that only counting knowledge does not solve all the time-space problems in hunting and fishing production, not to mention the number of head Ba Ba Ba head still has many shortcomings, the reason is that wooden round Disk calendar came into being.