Find a soul-worn ancient romance novel

The female protagonist seemed to be a handyman on the island. The owner was a young man who had killed countless people and never showed mercy. He also raised a death warrior to deal with disobedient Jianghu people. He was discovered by her but did not kill her. There were poisonous flowers and plants on the island. The female protagonist was not killed because she was not afraid of him. She had once persuaded him to save her son when he wanted to kill him. She had become his woman for no reason and had even given birth to his child. No one in the Jianghu was not afraid of his ruthlessness and cruelty, but he kept his men because she did not like to kill people. She could no longer stand the way he killed people and left angrily. She ran down the mountain and opened an inn. He could only send his personal guard to pretend to be a fool and protect her in secret. Later on, they had quarreled over marriage. What she wanted was love, but she thought that he wanted to give her a status. The ending was good. I can't remember the name of the novel, I want to find it back
His son seemed to be only five years old. After his mother died, she wanted to kill him for revenge, but she liked the female lead very much. He even asked the guards to teach his son martial arts. She passed through the desert due to illness.

Answer 1

The ancient romance novels of the soul can be referred to as the following examples:
"A concubine's daughter is poisonous."
Text:
She was originally a modern university student who accidentally transmigrated to ancient times and became the daughter of a powerful family.
Faced with all kinds of provocation from the daughter of a concubine, the ruthlessness of her scumbag father, and the malice of her enemies, she decided to use her intelligence and wisdom to step by step towards becoming powerful. Even the child of a concubine could inherit the family!
" I, Mu Niansheng, am the trash you all call trash, but I am different. I have my own way."
[Ancient Romance: The Traversal of a Concubine's Daughter]
Search keywords: Protagonist: Mu Niansheng, the daughter of Cao's concubine
Supporting role: Qin Nuanyang, the son of the Cao family
Plot Category: Sweet Wen's House Fight for a Lifetime