The Most Powerful Gain System

After obtaining what is known as the most useless system in history, he traveled to Yuanling Continent before his death but encountered another crisis. Yang Rui finally started his journey across the world, including the world of wind and cloud, the Marvel universe, Resident Evil, Lord of the Rings... After a wonderful journey in each world, returning to Yuanling Continent again, Yang Rui will eventually turn the world upside down! After finally understanding the true origin of this world, how should we go about the future?