Zi Collection, Page Position: Upper, Radical: Mouth (kǒu) Pronounced tong (level tone) and tu (level tone) according to "Tang Yun" (Tang Yun), "Ji Yun" (Ji Yun), and "Yun Hui" (Yun Hui). "Shuowen Jiezi" (Shuowen Jiezi) states it is the lower city of the State of Zhu, and there is a city named Zhu in the eastern part of the State of Lu. Pronounced si (rising tone) and xu (level tone) according to "Guang Yun" (Guang Yun) and "Ji Yun" (Ji Yun). Pronounced tong (level tone) and tu (level tone) according to "Ji Yun" (Ji Yun), with the same meaning.