The stone monument is believed to be erected near 2500 BC though there is no concrete proof the origin.
尽管没有充分的证据，但人们相信这座石碑在公元前2500左右就被竖立起来了。
Anhui Lingbi County jade stone origin has Melaleuca stone, white Qianceng stone, yellow Qianceng stone, blue Qianceng stone three.
安徽灵璧县璧石产地也有千层石，有白色千层石，黄色千层石，青色千层石三种。
On the basis of analyzing the geological origin of Changhua chicken blood stone, this paper discusses and summarizes its determinative characteristic.
本文在分析昌化鸡血石地质成因的基础上，初步分析总结了昌化鸡血石的矿物学鉴定特征，以期为其质量评价提供地学依。
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