In My Waning Years, I Raid the Sect with a System

In My Waning Years, I Raid the Sect with a System Plot:

Old Zhou, a handyman guarding the dilapidated temple at the back of the sect, is seventy years old and so frail that even the young disciple who tends the fire finds him too slow. One day, a mechanical voice suddenly popped into his head—【Sect Raid System activated! Mission: Make the Sect Leader perform the teacher-student salute within three days, make all disciples call you "Honored Elder" within seven days, or your lifespan will be reset to zero!】Old Zhou panicked, but when he helped the Sect Leader retrieve his lost natal sword, the Qingxuan Sword Aura he hadn't felt in a hundred years surged from his fingertips! Fragmented memories flooded back: he was once "Qingxuan Sword Sovereign," framed by his junior brother, stripped of his cultivation, erased of his memories, and thrown into the back mountain to fend for himself! Now, he must use the system to gain the sect's favor while uncovering the old conspiracy—but can his dying body withstand the missions? And behind the system, there seems to be a shadow of the person who framed him back then...