According to the Sound Collection (Jiyun), it is pronounced gong. According to the Jade Chapters (Yupian), it is defined as the mouths of many people. Also, according to the Broad Rhymes (Guangyun), it is pronounced zhong, and according to the Sound Collection (Jiyun), it is also pronounced zhong. The meaning is the same. Additionally, the Sound Collection (Jiyun) records that the ancient form of the character for litigation (song) is written as this character. For detailed annotations, see the Speech radical, four strokes.