Trapped in a Dark Room, I Summon Heavenly Thunder

Qitian, the illegitimate son of the Xu family, was abandoned for fourteen years before being brought home by his father Xu Donghai, where he faced contempt and abuse. He was falsely accused by his adopted son Xu Siwen. After finally ranking first in the school, Xu Siwen claimed he cheated, leading to a brutal beating by Xu Donghai and three days of starvation in a small black room by his mother Qin Ruping. Having traveled to another world to cultivate for eight hundred years and failed the tribulation, Qitian returned to Earth, vowing never to be a sycophant to the Xu family. He first intimidated the Xu family with his strength, demanding 5 million yuan from Xu Donghai, then went back to school to force the teacher who falsely accused him of plagiarism to apologize, slapping faces with Xu family's marriage candidate Liu Ruyan and others.