Beginning in the Song dynasty these criteria became a standard used for judging people. They gained acceptance, he believes, because exterior appearance is often a reflection of inner health or personality. For instance, people with large square faces have good networking skills and find it easy to get friends to help them. "Statistically, there is some correlation."
之所以有這樣的審美「規格」，黃友輔表示，命理之美能從宋代以來成為看人標準，因為外表常是內裡健康與個性的反應，比如面大四方的人，多具備交際手腕，容易得到朋友相助，「這是個統計學，某種程度是成立的。」