According to Guang Yun, the pronunciation of "Hao" is different, and the pronunciations of "Ji Yun", "Yun Hui" and "Zheng Yun" are different. As far as the sound gap (he) is concerned, the good book is pronounced as hē, while the southern part of Shanxi, Shaanxi, Lu Yu and Sichuan is still pronounced as he (the tone is unknown), while the Beijing-Tianjin area is pronounced as H(o, Hebei).