Pronounced wu ji (falling tone) in Guangyun and yan ji (falling tone) in Jiyun, with the same pronunciation as "yi". Explained in Shuowen Jiezi as "to strike". Explained in Leipian as "to strike and break", the sound of beating. Also, pronounced wu ji (falling tone) in Guangyun and yan xi (falling tone) in Jiyun, with the same pronunciation as "ni". "To strike and break", meaning to destroy. Furthermore, pronounced wu li (rising tone) in Guangyun and wu li (rising tone) in Jiyun, with the same pronunciation as "ni". The meaning is the same.