Blue Protocol is divided into the player level and the world level. You must complete several tasks to upgrade the world level and explore a wider area. But not all players have the time to complete all assignments and reach the adventure level of raiding dungeons or multiplayer bosses with friends. In the process of our levelling, after the player reaches the full level, he will learn all the skills, can freely experience the combination of all occupations and skills, and give full play to your imagination.