In the Second Generation of the Trench, He Changed To the Ruanfan Script - Chapter 26:

(Non-system, multiple female MCs, both good and evil)Fang Ling, who possesses the Chaos Sacred Body, was fiercely fought over by various forces since his birth. His heart, right eye, and treasured bone were successively taken away...After many twists and turns, the critically ill Fang Ling was placed in front of an ancient temple by a kind-hearted person. No one knew that within this ancient temple, five unparalleled masters were in seclusion. They had been hiding there for tens of thousands of years, suppressing the Immortal Heart of the Demon Ancestor.When the Immortal Heart erupted, the five masters were unable to contain it and took a desperate risk by implanting it into the infant's body. The fusion of the incomplete Sacred Body and the Immortal Heart led to the birth of a peerless monster...

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

She died in her prime as the Queen of Song.

After being reincarnated, she becomes a simple trainee.

Losing her former glory? It doesn’t matter—no one can compete with her voice as a beautiful singer.

Mocked by her lowly birth? It doesn’t matter—her true identity is enough to make the whole world tremble.

She owes huge debts? It doesn’t matter…

A powerful boss once whispered to her, “Your debt will disappear if you become my woman.”

But the proud her would reply, “I’m sorry. I would sell my art, but not myself.”

The most important duty of a Taoist priest is getting rid of monsters and exorcising ghosts, raising his temple’s reputation! Though, well, Xie Lingya is not a Taoist priest, he just has the Immortal Roots…

*

Some people can learn in a day what takes others ten years of hard work. Xie Lingya is like this – other people have to cleanse themselves and meditate to draw talismans, he can do it as easy as drinking a glass of water. Unfortunately, in this era, graduating from a renowned university is much more valuable than the talent for cultivation. He who has the Immortal Roots finally chose to study finance.

However, the world is unpredictable. His uncle, a Taoist priest, died unexpectedly, leaving his temple to Xie Lingya. His last wish was for his nephew to find the right person to inherit his sect’s teachings.

So Xie Lingya, who had no intentions to become a Taoist, ended up as… the owner of a Taoist temple. He began to earnestly manage the deserted little place, striving to gain believers. He also struggled to recruit priests, in hope of finding a suitable successor for his uncle. After a chance encounter, his target became Shi Changxuan, who came from an influential Taoist family and had outstanding skills. Not scared off by the man’s aloof personality, he struck up a conversation and tried to get his phone number. He didn’t realize this move could be easily misunderstood…

- Description from Novelupdates