Male Inferiority and Female Supremacy in the World of Immortal Cultivation - Chapter 135 - . This is the power of knowledge.

In this world, orphans or just anyone without any hope for this world can apply to become a “walking target”. Their sole purpose is to be a practicing dummy for the students of the sect who train to become “Demon Hunters”. These students need “walking targets” to test their training on living, walking beings of flesh and blood.
In exchange, they will be provided with food & shelter.
Their existence value is lower than a slave, but if they manage to survive a few years they can receive a life long pension.

Xiao Han is such a “walking target”. One time he witnessed a powerful Demon Hunter disposing a demon. When the demon died, a fragment of the demon that managed to escape entered Xiao Han’s heart. No one saw that, and even Xiao Han himself only felt some discomfort for an instant.

But that thing in his heart soon gave Xiao Han visions, and the first one is of a cultivation method which allows Xiao Han to absorb damage to enhance his body. A perfect cultivation method for a “walking target”.

- Description from Novelupdates

At the age of 16, Bian Yue became an orphan, inheriting a massive fortune from her family and becoming the wealthiest young heiress in Xiangjiang. The Li family, close friends with the Bian family, took pity on her and brought her to their home. Upon first meeting Li Siheng, he approached her past rows of black-suited bodyguards and tenderly offered to take her home, a gesture that would captivate her heart for a lifetime. At 22, Bian Yue managed to marry Li Siheng, but under the dim lights, he, with an indifferent tone, confessed his change of heart. Determined to part gracefully, Bian Yue resolved to give Li Siheng a decent break-up.Xiangjiang's newspapers headline the daily news, reporting that Shen Jin, the head of the Shen family, frequently visits temples due to a terminal illness and is on his deathbed. People applaud behind closed doors, citing his ruthless actions as karma. Seeing this, Bian Yue devises a plan. During a continuous downpour in Xiangjiang, Bian Yue sits in the Shen residence, drenched. In the dim light, she sees the distinctly elegant and captivating Shen Jin and hesitantly proposes marriage, to which he coldly agrees. Their marriage is hastily arranged, stirring public uproar.Meeting Li Siheng again after her marriage, Bian Yue takes shelter from the rain. Li Siheng rushes out of his car and runs to her, desperately holding her hand and pleading for a divorce so he could marry her. That night, Shen Jin, who was abroad, returns instantly upon hearing the news and confronts Bian Yue, who had just come home. Lighting a cigarette, he casts a more enchanting silhouette against the night, kissing her fiercely. He promises that the rainy season in the harbour city will end, and he will also wait for her return home.

The fiancée has betrayed, but how could she know that the man she looked down upon was in fact a prodigy with healing and martial prowess!