Rebirth of Illegal Rebirth

In 7406 AD, Liu Hao Teng, the Emperor of Wu, was accidentally betrayed and died. Not only did he not die, he was reborn! Back to the era of spiritual energy recovery in the 21st century. I originally thought that I could rise up quickly like in the novel, use the spiritual energy to practice in advance before it recovers, defeat the geniuses, and then achieve supreme status, but I didn't expect... A simple black ring flew out of thin air, and his cultivation level instantly dropped, making him unable to practice. Liu Haoteng said, this familiar routine... I'm afraid he's not the protagonist. But the truth never occurred to him... This book is also called "It turns out that I am an illegal rebirth" and "My dignified "protagonist" is so useless"