If the high-frequency hot words in 2021 are counted, "Metaverse" will definitely be squeezed into the top three. Throughout 2021, with the rising prices of various digital currencies and the gradual maturity of NFT products, combined with the growing demand for remote virtual communication under the epidemic, the concept of the metaverse has become popular. To this day, the metaverse is still a topic of conversation. The development of the metaverse gradually blurs the boundaries between virt...