Definition: Metaverse = VR / AR + Digital alias + NFT "Meta Universe" includes immersive experiences such as first-person watching, walking on the moon, holding meetings in virtual offices, etc., and believes that Unity, nVidia, Microsoft, Meta (Facebook), Snapchat and Roblox is the current main participant. This summary is certainly one thing, but all the major financial and technology media in the United States agree with the above definition. In addition, they are also concerned about the introduction of NFT as a tradable asset within its system, as mentioned by Meta (Facebook). Facebook began to explore crypto finance very early. In mid-2019, it announced its blockchain-based digital payment system and its currency variety Libra for the first time, as well as some initial partners, including Mastercard, Visa and S, the giants of the legal currency payment system. tripe. However, Facebook gradually faded out of Libra's implementation plan because of deep concerns about Libra's possible impact on the legal tender system by regulators in many countries, including the United States, and the project now known as Diem, has come to a de facto stagnation. However, the issuance of NFT is not as radical as issuing currency, and it is a personal transaction behavior of users on the platform, which is legally comparable to game equipment. Even in mainland China, which has adopted a "severe crackdown" on unofficial digital currencies, Ant Group, Tencent and others can still issue substantive NFT in the name of "digital collections". Moreover, the "altern" mentioned by Meta Universe (Facebook" is also extremely important. Just like all its services opened in the browser and mobile phone can be logged in with a single Facebook account, everything that happens after wearing a VR headset is also bound to the user's own Facebook account, which is more obvious that this user is in the number of users. The word "ID card" of the word world. In some worlds, such as Meta Universe Roblox, users can have more than one identity and can "pinch their bodies" as needed. Because Roblox is more like a platform for running many indie games, players enter different games, as if they walk through different "theme parks" in the virtual world, and of course they can choose different identities every time. However, Meta (Facebook) and Microsoft's expected user identity will be as unified as possible, and simulate real humans as much as possible in terms of body appearance, face shape, voice, posture, etc., in order to create a sense of presence that brings people who are not in the same time and space together. After all, only in this way can one of the typical usages be realized - colleagues have meetings in virtual offices, or teachers teach students. In Meta (Facebook) practice, "mete universe" is a combination of VR / AR, digital doubles, and NFT. However, the "meta-cosm" in other people's mouths is strange, and other popular statements, including introducing vibration, smell, taste, plugging electrodes to rewrite brain waves, taking over the nervous system and other words are not ablined, which may not exist in science fiction. It can be said that after Meta (Facebook), the meaning of "metaverse" in the majority of the population will tend to be unified, and people will have a deeper discussion based on this unified definition. Perhaps the "stand-in" part may have different branches, such as being diverted out of other platforms, allowing people to use completely anonymous and unbound false identities in the foreground and background; perhaps some small services are difficult to support the computing power and confirmation costs required by NFT, so other digital assets will be selected. Form. However, the carrier of the "meteraverse" is mainly VR / AR rather than drug use or posterior intubation, which will be a certainty in the next decade or even decades.