Prehistoric engraving symbols in the Huaihe River Basin were mainly popular in the Shuangdun culture around 7000,and disappeared in the Houjiazhai culture around 6000.However,the content of its engraving symbols,is popular with phase Ⅱ of the Houjiazhai culture and phase Ⅱ of Luyi wuzhuang.
Huaihe River BasinShuangdun cultureEngraving symbols