《太平广记·卷三百七十四·灵异》
原来他额上有块肉，暗暗突起如球状，失去珍珠之后，那块肉就陷下去了。
初额上有肉，隐起如球子形，失珠之后，其肉遂陷。
It turned out that there was a piece of flesh on his forehead that protruded like a ball. After the pearl was lost, the flesh sank in.