REALITY replaces the traditional TLS service, which can eliminate the server-side TLS fingerprint feature while retaining forward secrecy and other functions, and certificate chain attacks are also ineffective. Such security exceeds that of conventional TLS. Using REALITY, you can point to other people's websites without having to purchase domain names and configure TLS servers yourself, which is more convenient. At the same time, it realizes the full-process real TLS that presents the specified SNI to the middleman.