Traumatized Eldest Son's Ultimate Revenge

As the eldest son of the Liang family, Liang Chao was born with mental disabilities. On his wedding day, his parents were murdered by the second branch fighting over the inheritance, and he was sold cheaply to a dark web laboratory to be used as a test subject. After enduring countless tortures, Liang Chao suddenly awakened, becoming an invincible master with an indestructible body. He destroyed the inhumane laboratory, returned to the Dragon Nation to seek revenge, and uncovered a much larger power behind the scenes...