With the rapid development of digital technologies such as artificial intelligence,virtual reality,and digital twins,human living space is no longer limited to the real physical world.The digital virtual space composed of digital content and data algorithms has gradually become an indispensable part of people's lives.The Metaverse is considered the ultimate form of the fusion of virtuality and reality in the future,but due to issues with conceptual translation and a lack of broad academic consensus,the Metaverse is still in a state of divergent opinions,making it difficult for the public to form an accurate and clear understanding of this concept.The development process of digital generation technology is reviewed and the concept of"complex universe"is proposed from the perspective of China's digitalization process and national conditions,in order to promote relevant departments,practitioners,and users to better understand this emerging technology and guide the healthy development of the industry.Based on the concept and connotation of complex universe,an in-depth analysis of essential ele-ments,technical support,and application scenarios of the metaverse is provided.Finally,relevant suggestions are put forward for the future development of Metaverse,including technological breakthroughs,rule formulation,industrial layout,and talent cultivation.