After Pretending to Be Mute for Seventeen Years, I Unlocked the Mantra and Went Crazy.

[Travel + System + High Martial Arts + Decisive Killing + Single Female Protagonist] Shen Yan, an ordinary college student in Jinling City, Blue Star, accidentally traveled to a parallel world with a newborn baby of the same name. Unfortunately, this is a world of high martial arts where alien beasts are rampant. Fortunately, he has the essential golden finger for time travellers—the system. However, this self-proclaimed mantra system has harsh unlocking conditions - it can only be unlocked after seventeen years, and during this period he cannot speak! From then on, Shen Yan began to live as a mute for seventeen years. But the goddess of luck is never on Shen Yan's side... First, his parents who loved him died in a battle with alien beasts. Then the uncle's family who adopted him seized his assets. Shen Yan, who was driven to Jinling by his uncle's family, had to depend on Tang Xue, the maid who took care of him. But then Tang Xue was also killed by evil people! Since then, Shen Yan, who has closed his inner world, spends his time in nightmares day after day. He has always considered himself a sane person. Because of this. After so many unfortunate events. The feeling of extreme pain in his heart that he couldn't express to anyone seemed to drive him crazy! The feeling of being wronged but unable to defend himself made him extremely aggrieved! The world was full of malice towards him from the moment he was born. Shen Yan suddenly understood that this was a world of cannibalism, where strength was the rule. However, being alone, he had no capital to stand on in this world. If you want to change everything, you can only rely on the system... Now, seventeen years have passed and it is time to embark on the road of revenge...