The period from the Qin to the early Eastern Han dynasty saw a transition in Chinese agricultural production from farming with hoes and spades into farming with ploughs.

秦至东汉中期，我国农业生产仍处于由锄、锸耕向犁耕过渡时期。

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It originated from the Warring states, developed in Qin Dynasty and matured in the early part of west Han Dynasty.

这种思想初步形成于战国时期，经过秦代这一过渡性阶段，在西汉前期完全形成。

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Tang dynasty saw ideological emancipation and resuscitation of the various schools of thought put forward by the exponents during the period from pre-Qin times to the early years of the Han Dynasty.

唐代思想解放，诸子学说重兴，沉寂多年的墨学亦受到重视，唐中期韩愈、柳宗元等都对墨学做过研究。

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