《隋书·帝纪·卷一》
高祖龙颜堂堂，额上有五根像柱子的印记连着头顶，目光外射，掌上有 王 字的纹理。
为人龙颔，额上有五柱入顶，目光外射，有文在手曰 王 。
Gaozu had a majestic face, with five pillar-like marks on his forehead that connected to the top of his head. He had piercing eyes and the character "king" on his palms.