《论衡·卷二十五·诘术篇》
五音之家，根据发音来使姓、名、字协调而不出现相克的情况，根据姓的发音来确定名，又根据名的发音制定表字。
五音之家，用口调姓名及字，用姓定其名，用名正其字。
The family of five tones, based on pronunciation, makes the surname, name, and first name coordinate and does not appear to be mutually exclusive. Based on the pronunciation of the surname, the name is determined, and based on the pronunciation of the name, the first name is formulated.