The Haidai area reflects the influence of jar burial customs from the Central Plains,resulting from continuous communication and interaction between the Central Plains and the Eastern regions during the Peiligang and Yangshao periods.The Dawenkou culture period witnessed the peak of jar burial practices in the Haidai area,originating in the late Beixin culture period.However,during the early and middle stages of the Dawenkou culture period,this custom underwent significant simplification due to local transformations.By the late Dawenkou Culture period,the traditional jar burial customs were no longer recognized by the common populace and gradually evolved into a new burial form,where corpses were covered with pottery fragments.Subsequently,during the middle and late periods of the Dawenkou culture,following the differentiation of social hierarchy,coffins emerged as a significant symbol for the aristocracy to display their status and wealth.In response to this social shift,the practice of covering corpses with pottery fragments emerged as an endeavor by individuals from lower social strata to emulate the coffin burial tradition.