Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 669 - 668 The things I hate the most are lies and betrayal.

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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Ten years of marriage.Known since childhood.Yet, he felt he had never known her.What he saw was a loving and gentle wife. But what he heard about her from others had always been different.One said she married him for his money.One said she seduced a Prince behind his back.One said she spiked her sister and sent her to a man’s bed.One said she tortured the servants behind his back.One said…He had heard many such things but never believed anyone.Until one day, he saw how she scolded his brother, slapped his sister-in-law in the face, and pushed his nephew into the pool.He couldn’t take it anymore and asked for a divorce but she rejected to his face.Then he heard the news that she obtained the shares of their company and was about to overturn his brother’s position.“How did she turn into a scheming wife?” he asked, not really expecting any answers.But he got a chance. He woke up to the day he got married.He thought it was his chance to get rid of the woman from his life. He would save his brother and his family from his ‘wife’. He will get a divorce from her.But…Why couldn’t he get rid of this wife at all?Had she been so scheming all her life? Clearly not.In this life, he started seeing her life the way he had not seen before. From her perspective, she had shed tears without him knowing.He realized that he had been a bad husband all along.Suddenly his life changed from trying to divorce her to changing her ‘fate’.Who would win in this battle?Her fate of becoming a scheming woman? Or his determination and … love?

A supreme expert in the Immortal World had died, and a strand of his soul returned to its original body on Earth. Tang Xiu discovered with amazement that ten thousand years passed in the Immortal World, yet only a single year passed on Earth.

Ruthlessly betrayed by his lover and trusted friends, Tang Xiu found that his soul went back to his previous body on Earth, and, despite he spent 10,000 years in the Immortal World, just a year has passed on Earth and many things have changed. Having an unsurpassed knowledge, Tang Xiu will protect his loved ones and go back to the Immortal World to take his revenge.

- Description from Novelupdates

Lin Wudao transmigrated and obtained an invincible system to bury corpses.

So long as he buried the corpses of the powerful, he got to take over what they had or what they touched as his bonus. What was more, those items he stood to win were the enhanced versions.

The minimum level was enhanced by ten times!

“You’ve buried the corpse of Jiang Taichu the Great Emperor. Your cultivation prowess just increased by 10,000 years!”

“You’ve buried the corpse of your fiancee, Jiang Qingxue. You get the essence of the immortal, which is enhanced by 100,000 times! It’s thus upgraded into the essence of harmony. You will become the Immortal Emperor after the extraction of it!”

……

Ever since he acquired this system, Lin Wudao had embarked on an invincible journey of advancing history and dominating the world.