This question was related to ancient novels and historical knowledge. Mu Bai was a common emperor name in ancient novels, but not all emperors had this name. The name Mu Bai appeared in some ancient novels and historical documents, usually in the names of emperors, especially those legendary figures such as Song Jiang in the Water Margins and Liu Bei in the Romance of the Three Kingdoms. The meaning of the name Mu Bai was not fixed. Sometimes it referred to purity, innocence, sometimes it referred to white clouds, sometimes it referred to white feathers, and so on. In ancient novels, the emperor was depicted as having a pure and flawless personality and noble moral character, so he was called Mu Bai. It should be noted that the names of emperors in ancient novels were usually fictional and did not match historical facts. Therefore, the meaning of Mu Bai's name was only a kind of imagination and description in ancient novels and did not represent historical facts.