The Legend of the Demon Martial Emperor: An Isekai Cultivation Adventure - The Legend of the Demon Martial Emperor, #6

In the Yi family of Hongcheng city, Yi An was an insignificant member, but after his father's disappearance, Yi An and his mother suffered bullying. Until three years ago, when an accident occurred, the real Yi An ceased to exist. The current Yi An is actually a devil cultivator who has crossed over from another world. After three years of tempering, he rose from the ruins. With the body of a devil cultivator, he broke free from his shackles and looked down upon all others...
A young devil cultivator, reborn into this other world. Here, his brilliance soars again. No devil is too formidable, no devil too fearsome...  ---   "Take my sword strike!" Ximen Qing roared, his sword gleaming sharply and exuding an intimidating presence. With a decisive slash, the space in front of the sword blade seemed to twist as if the sword intended to split space itself. Accompanied by a crackling sound, it cut through everything in its path.
Holding the sword hilt, Ximen Qing swiftly descended, bringing with him gusts of wind that made it hard for some onlookers to keep their eyes open. The long sword even split the flame in two, dividing it neatly to either side.