ShanHai is a 3D massively multiplayer online role-playing mobile game (MMORPG) based on blockchain technology. The world view of the game is based on UTONMOS original IP "Metaverse History", which combines traditional classic culture and future fantasy elements, and has multiple competitive modes such as single-player dungeons and guild battles. In the vast U-6174 galaxy, virtuality and reality are interdependent, and destruction and rebirth are repeated. Players need to use skills as the core,