Unlike the earlier Qin fortifications, the Ming construction was stronger and more elaborate due to the use of bricks and stone instead of rammed earth.

由于使用砖石及石头代替夯土，与早期秦长城相比，明长城更为坚固，技术更为复杂。

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Only a tiny segment of the Qin wall remains, which was a reinforced earth barrier unlike the imposing stone structure built by the Ming Dynasty some twelve centuries later.

秦朝长城现仅存一小段，秦朝长城是用土坯加固的，不像12个世纪后的明朝修建的长城是石头结构的。

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It 's evolution include "post - Qin, Han, Wei and Jin, North and South Dynasties, Tang, Song and Jin, Yuan and Ming and Qing".

其演变按时代可分先秦、两汉、魏晋、南北朝和晋、初唐一中唐、宋金、元明清等几个阶段。

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