From Underground to Above Ground

"Ready Player One"-like world background, everyone enters the dungeon time and space in a complex game. Each time and space has its own unique mission. For example, if you travel through an urban novel, your mission may be to break up the loving hero and heroine within a specified time. If you travel through a historical world, your mission may be to destroy a certain country or save a certain city. If you travel through a magical world, you may help righteous humans defend against the attack of demons, or you may help evil necromancers attack human cities. In the dungeon world, you play various roles. You can be the fairy sword Li Xiaoyao or the eunuch Zhang Fei. You can be a bad guy or a good guy. Of course, most of the time you just play the role of a passerby. Your purpose is just to complete the tasks in the dungeon world, get the treasures you want, and finally prevent humanity from being destroyed when monsters attack the city a year later in the main world!