Pronounced li ji (falling tone) in Tang Yun, li zhi (falling tone) in Guang Yun, and nian er (falling tone) in Ji Yun, with the same pronunciation as "xi". Shuowen Jiezi explains it as two "yao" characters superimposed. Guang Yun states it represents "li er", meaning clear and understandable, and is a pictographic character. Also, pronounced yan er (falling tone) in Ji Yun and Lei Pian, with the same pronunciation as "yi". It signifies a state of clear distribution. Also, pronounced lang ji (falling tone) in Guang Yun and Ji Yun, with the same pronunciation as "li". Guang Yun explains it as to stop or bind. Ji Yun explains it as two "yao" characters superimposed.