MTL - A Magical Hogwarts - v7 Chapter 43 Revenge 16 years late

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

As the other person’s stand-in, he humbly falls in love with the president.

Xue Yingshuang was a stand-in, and humbly fell in love with Xing Yun…’s salary pay.

As the other person’s stand-in, Xue Yingshuang wishes he could never be separated from the president for the rest of his life.

He is a stand-in, and he must get off work at one o’clock.

The president’s white moonlight came back, other stand-ins were sad, and depressed. They couldn’t handle the jealousy and finally left with a dead heart.

Xing Yun’s white moonlight came back, and Xue Yingshuang had no waves. He enthusiastically served white moonlight and shone brightly at work.

Xing Yun: Little stand-in, is this your little trick to seduce me?

Xue Yingshuang: Misunderstood.

Xing Yun: Do you want to suffer in silence and finally leave secretly, driving me crazy?

Xue Yingshuang: You think too much, how can I leave? I still have half a year of social security before I can receive unemployment insurance.

Xing Yun: ?

Xue Yingshuang: I also haven’t received the year-end bonus you sent me yet.

Xing Yun: ??

Xue Yingshuang: I didn’t get my paid annual leave either.

Xing Yun: ???

Xue Yingshuang: Wait until I get the money and put it towards a vacation.

- Description from Novelupdates

At the end of a Dynasty filled with Demons and rampant Martial Artists, Lin Xuankong has unfortunately transmigrated to this era, becoming a poor and sickly old man. However, with the help of the system Life Plate, his Talent and Comprehension grow stronger the longer he lives.And his much younger wife is a martial master...“That iron ball used to be Zhang Wu's knife. I squeezed it a couple of times, and it ended up like this! ” said his wife.“I hope you can teach me some Cultivation Techniques. As for the reward...” said Lin eagerly.

A Deadly Secret, also translated as Requiem of Ling Sing and Secret of the Linked Cities, is a wuxia novel by Jin Yong (Louis Cha). It was first published in the magazine Southeast Asia Weekly (東南亞周刊) and the Hong Kong newspaper Ming Pao in 1963. Its original Chinese title was Su Xin Jian before Jin Yong changed it to Lian Cheng Jue. The story revolves around the adventures of the protagonist Di Yun, an ordinary young peasant, who is imprisoned after being framed. In his quest for vengeance, he accidentally acquires the Liancheng Swordplay manual (連城劍谱), an ancient artifact not only prized for the skills detailed inside, but also for containing a secret leading to a treasure.