Pronounced xian (flat tone) according to the "Tang Yun" (Tang Yun), and xian (flat tone) according to the "Ji Yun" (Ji Yun), with a pronunciation similar to "xi". The "Guang Yun" (Guang Yun) explains it as "lu" and "li". The "Shuowen Jiezi" (Shuowen Jiezi) explains it as "li" and "li". Detailed explanations can be found in the annotations for "li" and "lu".