Fantasy of Cultivating Immortality Beyond Time and Space

In the future world, mankind has already achieved unity and entered the interstellar era. In the competition with other civilizations, genetic warriors, ancient martial arts practitioners, and mecha warriors played a huge role. Li Yunkai, a funny guy from the 21st century, traveled to the future with the system, cheating all the way, and dominating the galaxy. It turned out that this was just the beginning... "System, what is the reward this time?" "Congratulations to the host, for getting three days of attribute-picking experience." "Then what is the reward next time?" "I guess it's a sign-in." "What about next time?"...