The body and everyday objects(real and virtual)are the main media for forming performance narratives.After entering the performance framework,the meaning of both changes,presenting a sliding trend of the sign triplet.When everyday objects enter the performance framework,they jump out of their original carrying functions or return to their clear material origins,showing an upward trend of everyday objects sliding towards practical signs and artistic signs.When the body enters the performance framework,it transforms into a certain object or posture,reflecting the return of the body to materiality.The horizontal sliding of the sign triplet affects the upgrading and restoration of the body and everyday objects,together forming two vertical expressive paths of performance narratives,and more clearly outlining the three types of performance properties of performance narratives:human-dominated performance forms(including situations where objects are anthropomorphised),integrated human/object performance forms(situations where performers become objects,people and devices are integrated,etc.),and object-dominated performance forms(including pure object performances and situations where the body is digitised).