Dawu 大武 is a dance composed after the conquest of Shang 商 (c.a. 17th century BC - 11th century BC) by King Wu 武 (c.a. 1087 BC-1043 BC) in the early Western Zhou Dynasty (1046 BC-771 BC). The nature and contents of the Dawu dance had aroused controversy among scholars in the past. Starting from the mid-20th century, researchers began to employ the newly excavated Dawu Ge 大武戈 as evidence to re-examine Dawu. They concluded that the bronze dagger-axe should be a type of dance property used in ancient sacrifices. In short, this article discusses the notion of Wu morality (Wude 武德) displayed by the Dawu dance and its evolution during the Spring and Autumn and Warring States Periods (770 BC-221 BC) with reference to records in ancient and recently excavated documents. It also seeks to analyze the transcriptions of "Dawu mibing" 大武□兵 inscribed on Dawu Ge.