The Yanshan area is the most developed region of the Meso- and Neoproterozoic stratum in north China, the whole area has continuous outcrops, complete stratum and steady deposition.
燕山地区是中国北方中—上元古界地层最为发育的地区,整个地区露头连续、地层齐全、沉积稳定。
参考来源 - 东燕山地区中元古界南口群层序地层格架研究·2,447,543篇论文数据，部分数据来源于NoteExpress
试验研究证明燕山地区具备了郁金香种球生产的基本自然条件。
Experimental study indicated that Yanshan Mountain area possesses the fundamental natural conditions for bulb production of tulips.
燕山地区位于华北地台的北缘，是燕辽金成矿带的重要组成部分。
Yanshan region is an important component of Yan-Liao metallogenic belt located in the northern margin of north China platform.
在东北有燕山地区文明，其代表性的考古学文化主要是红山文化。
In the northeast was mountain Yan civilization. The representative archeological culture is Hongshan culture.
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