Zi Collection, Middle Volume Radical: Pig (hài) Page 94, Entry 01 The Tang Rhyme (Tangyun) and the Collected Rhymes (Jiyun) state that this character is pronounced sui (falling tone), with the same sound as the character meaning flint. The Jade Chapters (Yupian) state that it is currently written as the character meaning follow (sui). The Expanded Rhymes (Zengyun) state that the vulgar form is written as the variant form (sui), which is incorrect.