Mao Collection, Upper Volume Radical: Heart (xīn) Pī Page 379, Entry 15 Pronounced pī. According to the Jade Chapters (Yùpiān), it means fear. In the Model Sayings (Fǎyán) by Yang Xiong, it is stated that when one's temperament is gentle, one becomes fearful. It also denotes negligence or slackness. Note: The Broad Rhymes (Guǎngyùn) and the Jade Chapters (Yùpiān) both provide the pronunciation based on the syllables fu and bei, while the Collected Rhymes (Jíyùn) and the Classified Chapters (Lèipiān) provide it based on the syllables pan and bei. The initial consonant in the syllables fu and pan relates to the distinction between labiodental and bilabial consonants. This occurs because the traditional phonetic system allowed for an interchange between light and heavy lip sounds. Using a light labiodental initial to represent the pronunciation of this character, which has a heavy bilabial initial, was a common practice. When Gu Yewang compiled the Jade Chapters (Yùpiān), the distinction between these lip sounds was not yet finely categorized, and such methods were often used interchangeably, failing to achieve perfect phonetic alignment. The Broad Rhymes (Guǎngyùn) followed this practice without modification. By the time of the Collected Rhymes (Jíyùn), the system moved toward greater phonetic precision, and the pronunciation based on the syllables pan and bei became the standard, which was subsequently followed by the Collection of Rhymes (Yùnhuì) and the Correct Rhymes (Zhèngyùn).