Urban fantasy, apocalypse, mechs, parallel worlds, time travel, alien monsters, invasion by other races.
Parallel World 2: Earth
The world is less than three years away from the apocalypse.
During the spiritual qi revival, Li Qingyun, an adventure enthusiast, accidentally releases Sun Ping'an, whom he had sealed away. Li Qingyun then experiences all kinds of bizarre events across different parallel worlds and makes many friends. After facing one heartbreaking parting after another, he grows tremendously.
This is my first time writing, so I'm inexperienced. Please go easy on me. Thank you.