ForewordWEB 3.0 is the development trend of the Internet, so what is WEB 3.0? In the era of WEB 1.0, the Internet only provides display, and we can browse various information through the Internet; in the era of WEB 2.0, Internet service providers not only show us information, but we can also publish information by registering an account and logging in. At the same time, Internet service providers will also obtain our personal information and analyze our web browsing habits to provide us with ...