When I first entered high school, the system insisted that I was destined to be an emperor in my lat

The rating will rise soon after release [System Arrives Early] + [Refreshing Read] + [Overpowered Character] + [Single Female Lead]
Jiang Feng is an ordinary high school student at Linchuan High School. He has average talent and comes from an ordinary family. His younger sister, Shen Weilan, who has been raised at home since childhood, has the Divine Phoenix Physique and has an astonishing cultivation speed!
Countless classmates mocked him, saying that his younger sister, Shen Wanlan, was the biological child, and that he was an adopted child.
He was disapproved of by his teacher, disappointed by his crush on the school beauty, and spent his days in a daze.
Who would have thought that three months before the college entrance examination, he would awaken the Late Emperor System!
System: [Host, as the Great Emperor who guarded this region, you fought a great battle with the Beast Empress in your later years, suffering severe injuries and on the verge of death.]
Jiang Feng: What's going on? Didn't I just start high school?
System: [System awakening! Helping the host restore the strength of an emperor and revive the hope of humanity!]
Jiang Feng: Wait a minute, I'm not the Emperor! Is the system making a mistake?!
Shen Weilan: My brother is clearly a homebody, so why do I feel so cool when I see him beating up all the top talents!