One Person: Gate of Time and Space, Summon Zuo Ruotong at the Beginning

Lu Yu traveled to a world under one person. He became Lu Jin's biological grandson and Lu Linglong's biological brother. Like his cousin Lu Lin, he was specially granted the third level of cultivation method of reverse life. But I haven't started it in ten years. But before I realized it, this was not because Lu Yu had poor talent, but because he was too special and had awakened a system-like ability. It's called the Gate of Time and Space. Not only can it transcend time and bring the famous and powerful people in the original work to the present world, but it can also use their power to practice, and even invite them to take over and use their power. Lu Yu: "No, I have become the king of debtors. In that case... Lu Jin, Zhang Zhiwei, and Lu Ci, you three can come together. By the way, remind me, your opponents... Are Zuo Ruotong, Zhang Jingqing, and Lu Ren..."