Si Collection, Upper Volume Radical: Water (shuǐ) Entry: 渦 Kangxi strokes: 13 Page 634, Entry 07 According to the Extensive Rhymes (Guangyun) and the Collected Rhymes (Jiyun), it is pronounced he. It is the name of a river. It is the same as the character written as guo. According to the commentary on the Treatise on Geography (Dili Zhi) in the History of the Former Han (Qian Hanshu), the source of the Guo River connects to the Langtang Canal, flowing eastward to the Xiang region before entering the sea. Furthermore, according to the Collected Rhymes (Jiyun), it is pronounced gua. The meaning is the same. Additionally, according to the Extensive Rhymes (Guangyun), the Collected Rhymes (Jiyun), the Rhyme Collection (Yunhui), and the Correct Rhymes (Zhengyun), it is pronounced wo. It refers to a current of water. According to the Erya (Erya): Explaining Water (Shi Shui), a whirlpool is a swirling current of water. The commentary states that this refers to a rotating current of water. It is also a surname. According to the Records of Decisions in the Three Auxiliaries (Sanfu Jue Lu), there was a Governor of Fufeng named Wo Shang.