My Golden-Fingered Grandpa Doesn't Know Anything

[System + ability + interstellar + time travel] Space cracks suddenly appeared in various countries. Li Huanian traveled to another world in his sleep and awakened his space system ability. Just when he was happy, he suddenly discovered that there was more than one person who had traveled through the world. His spiritual energy gradually penetrated into the basketball star, and he was unintentionally involved in the world's turmoil. Let's see how Li Huanian conquers the stars‎