How to incorporate subtle horror elements into your story?

She conspires and provokes the most powerful young master in Beijing! They sign a contract and with his every call, she has to go anywhere and do anything his bidding. When their contract ends, she smirks and said, “I’ll take the money and you can leave. We don’t owe each other anything.” He is Young Master Ya who rules Beijing. He controls the business empire during the day, and he is the strongest king at night. He is cold and women are merely playthings to him. With his power, the women he has eyes on have never been willing to leave him, yet she is an exception. She loves money, like all the previous women, but she is never shy of showing her greed. And he never realizes that he will ever grow a heart for such a promiscuous and cheap woman… He points a gun straight at her heart. “Die with me, or accept my love—which one do you choose?” She pouts and turns around, before she pushes an adorable child into his arms. “Here, there’s your answer.”

Feng Ruqing was a spoiled princess with a hideous countenance in Liu Yun Kingdom. She used to ride roughshod over anyone who stood in her way, backed by her father the emperor who loved her with all his heart. Not only did she force the chancellor's son to marry her by breaking the existing loving couple up, but her mother-in-law had also passed out from rage because of her. In the end, she took her own life after the heartbreak and humiliation of being dumped. When she opened her eyes again, she was no longer the bratty princess who was a good-for-nothing. * * * Rumor has it that spirit beasts have become servants in princess’ manor and the princess is devouring precious spirit herb dishes every day. Rumor has it that the chancellor’s son who pleaded for reconciliation after divorcing the princess was thrown out of the princess’s manor. Rumor has it that some good-looking young masters went to the princess’s manor in hope of being her servants were nearly killed by the state preceptor. Rumor has it that the charming state preceptor was looking for the princess eagerly as he wanted to hold her responsible for sleeping with him.

On the day of her escape from prison, she had died unexpectedly and was reborn into the body of Madam Huo. He was the heir to the number one financial magnate. She had charged out of nowhere and from then on, the obedient and weak Madam Huo had started to awaken. She had been trampled under her feet. Huo Shao had expressed that since she had already been conquered, wouldn't it be too unfair for her if she did not give her body to him? The muzzle of the gun was aimed at her head, "I only lost my wife and did not divorce. Choose between loving me or dying for love. " Gu Ruochu,"..." Do I still have a choice?

Five years ago, Qiao Nian was schemed against by her sister, Qiao Xin. After spending a night with a stranger, Qiao Nian got pregnant. She did not know who the father of the child was, and eventually gave birth to a stillborn. Under the machinations of her mother and sister, Qiao Nian was stripped off of her shares in Qiao Group and sent to a mental hospital. Five years later, her younger sister, Qiao Xin, was going to be married off to the Second Young Master of the Gu family. He was rumored to be extremely ugly. On the day he was born, the doctor predicted that he would not live past twenty years old. Her mother could not bear to see Qiao Xin marry such a person and thought of Qiao Nian, who was still locked in the mental hospital. Overnight, Qiao Nian was taken out of the hospital to replace Qiao Xin in her marriage into the Gu family. Her mother said, "It's a good thing that Qiao Nian, this good-for-nothing, can replace Xin'er to be a living widow in the Gu family. If Xin'er were to marry into that family, I would be heartbroken." Qiao Xin said, "Mom, don't say that about Sister. If it weren't for her, I wouldn't know what to do. I'm just worried that Sister wouldn't agree." Her father said, "Xin'er, you're too kind. Have you forgotten how Qiao Nian slandered you five years ago? She has no self-restraint. She got pregnant before marriage and even gave birth to a stillborn child. We're treating her well enough by letting her marry someone from the prestigious Gu family! What right does she have to be picky?" Qiao Nian sneered. Back then, the scheme against her had only succeeded due to a freak combination of factors, causing her to suffer. She was going to get back at all of them! Everyone thought that her actions were borne from a combination of a loser's mentality and mental illness, but little did they know that this marriage would be a strong union as impactful as Mars crashing into Earth! Taking advantage of her brilliant skills in medicine, Qian Nian made various trashy people and scumbags eat their words. In the blink of an eye, her multiple identities shocked the world as each of them got exposed. It turned out that she was rich enough to rival a country! Later on, Second Young Master Gu placed a pair of Qiao Nian's miniature clones in front of her. Faced with these two children who resembled her and Gu Zhou, Qiao Nian blinked in shock. "When did I give birth to your children?"

Tang Hao was an honest man making an honest living, but despite all his honesty and kindness, life often looked the other way. Even when he stood up for a man in the streets, he ended up being beaten to a pulp and the man he stood up for? He disappeared. That left Tang Hao with nothing to prove and a hefty medical bill blowing through his savings. However, while he lay unconscious in the hospital, he could feel a warmth coming from the jade pendent he wore as it began to feed him with a trove of priceless information. Now discharged, and still armed with the same naivety and honesty, what will our village peasant do with this newfound power? Will he go on to conquer the hearts of a hundred women? Will he defeat the mightiest crime lords? Only time will tell, but for now, fate has many whimsical plans for Tang Hao.

Above the sky, a kilometer-long giant fish flew over the city, ignoring the bombardment of missiles. In Australia, a kilometer-long world-destroying python destroyed cities, devouring millions of people, and slowly left under the explosion of several nuclear bombs. Coming to this dangerous world, Jack Clark, who unexpectedly obtained a salamander clone, was a little confused. What could he do with a palm-sized hexagonal salamander? Make videos to earn money? Catch shrimps in a stream? Or... make it evolve into a giant beast? A hexagonal salamander, also known as a hexagonal dragon, with unlimited evolutionary abilities, gradually evolved into a mythical world-destroying beast. From a hundred meters long, it turned kilometers and tens of thousands of meters long... And under the synchronized strengthening, Jack Clark's original body also grew stronger, with increasing strength and speed, and even...