Zi Collection, Upper Volume, Page 3, Entry 01 Pronounced wang yǔ (falling tone) In the "Guangyun" (Guangyun) and "Jiyun" (Jiyun), it is recorded that the pronunciation is "wang yu qie" (falling tone), and the sound is the same as "yu". In the "Shuowen Jiezi" (Shuowen Jiezi), it is explained as the sound of flowing water. The character structure is formed with "yu" as the semantic component and "yu" as the phonetic component. Zi Collection, Upper Volume, Page 3, Entry 02 In the "Guangyun" (Guangyun) and "Jiyun" (Jiyun), it is recorded that the pronunciation is "wang yu qie" (rising tone), and the sound is the same as "yu". The meaning is the same. In the "Jiyun" (Jiyun), it is recorded that this character is interchangeable with "yu".