i Got the Ghost Face
this is called 乾坤核 or 鬼脸核桃 or 乾坤核桃 in chinese.one of wenwan walnuts
鬼脸核桃 is "Ghost-face walnut" or "Ogre-face walnut" in english
mainly sell on taobao.
i bought on Japanese online market.
this is So light weights and hollow, few beans in inside.