Tang Rhymes (Tangyun) states the pronunciation is wei. Collected Rhymes (Jiyun) states the pronunciation is wei, which is the same as the sound of the word for danger. Explaining Graphs and Analyzing Characters (Shuowen Jiezi) defines it as zuiwei. The Er Ya (Erya), section on Explaining Mountains, states: zui is zuiwei. The Commentary on the Er Ya (Er Ya Shu) explains: zui refers to the tip of a mountain peak where the mountain is precipitous and towering, appearing in the manner of zuiwei. Additionally, Collected Rhymes (Jiyun) records that this character is sometimes written in the variant form yi. Also, according to Collected Rhymes (Jiyun), it is pronounced yi. Rhyme Compilation (Yunhui) and Correct Rhymes (Zhengyun) state it is pronounced yi, which is the same as the sound of the word for appropriate. Also, according to Collected Rhymes (Jiyun), it is pronounced wei, which is the same as the sound of the word for towering. The meaning is the same.