Si Collection, Upper Volume Radical: Water (shuǐ) Entry: Sui Kangxi Strokes: 20 Page 660, Entry 13 According to the Book of Broad Rhymes (Guangyun) and the Collection of Rhymes (Jiyun), the pronunciation is sui (rising tone). According to the Rhyme Compendium (Yunhui) and the Corrected Rhymes (Zhengyun), the pronunciation is sui (rising tone). In the Jade Chapter (Yupian), it means smooth or slippery. In the Book of Rites (Liji), specifically the chapter Internal Rules (Neize), it says: Use warm water and slip-inducing substances to make it slippery. The commentary states: In the Qi region, slippery is called sui. Also, according to the Collection of Rhymes (Jiyun), it is pronounced sui (rising tone). The meaning is the same.