The MC eventually absorbs the female lead's system and absorbs its power, which I found so cool. It's a very fresh idea.

Background: The MC has an ability core he got in the apocalypse. If he collects energy, he can use it to help the ML's illness. He originally goes it because he believes his fate is tied to the ML's, but you know what happens... he falls in love. Chapter 54, they still have 'it's complicated' as their relationship status. The MC gets fevers when his ability core upgrades, and he and the ML are at hospital. The female lead comes to "return a book" to the MC, but the MC has just realized how the female lead's golden finger works.

THE EXCERT:

Qiu Xing.

... And Mu Zhouyi!

He couldn’t let Mu Zhouyi meet Qiu Xing!

Xie Yang suddenly woke up. He tried calling out for Qiu Xing but his throat was so dry he could only make some breathing sounds. The voices at the door continued and Mu Zhouyi wasn’t driven away.

He used the strength of his arms to sit up, pulled the needle from the back of his hand, got out of bed barefoot and walked to the door of the ward.

Mu Zhouyi couldn’t meet Qiu Xing. His direct contact with Mu Zhouyi made him completely sure of one thing. Mu Zhouyi’s golden finger would directly affect the human brain after contact. If it had to be classified as an ability then it would definitely be a mind control ability.

All mind control abilities had more or less negative effects on the human brain. Healthy people might not be really hurt by this negative impact but Qiu Xing had a terminal illness. In addition, the source of his terminal illness was in the brain. Xie Yang didn’t know if a person with a malignant tumor in his brain would be in a worse condition after his brain was affected by mind control.

In the original novel, Qiu Xing’s illness was indeed aggravated after he started to have frequent contact with the female lead. He couldn’t let Qiu Xing...

“I’m sorry. This is the character biography that Director Xu Heng asked me to pass onto Xie Yang. Mr Qiu, look... ”

“Give it to me.”

In his vision, Qiu Xing reached out to Mu Zhouyi.

Xie Yang didn’t know where he got his burst of strength from. He rushed to the door with his weak body, pulled back the hand Qiu Xing was extending to Mu Zhouyi and turned to face Qiu Xing’s shoulder, blocking Qiu Xing with his own body. He glanced back at Mu Zhouyi and squeezed out some words. “Who told you to come?”

Mu Zhouyi’s outstretched hand fell down as she stared at Xie Yang in a stunned manner. Her eyes swept over Xie Yang and Qiu Xing’s ambiguous pose and her mouth dropped open. She was unable to speak.

“Don’t you like Feng Qinglin? Go and concentrate on him. Don’t touch my person. Get out of here!”

Xie Yang took the character biography from Mu Zhouyi’s hand, pushed Qiu Xing two steps inside and slammed the door of the ward. Then he looked at Qiu Xing with a frown. He wanted to tell Qiu Xing not to see any messy people. However, the feeling of dizziness came suddenly and he tightened his grip on Qiu Xing, placing his hand on Qiu Xing’s shoulder in discomfort.

AD
Qiu Xing froze from being embraced by Xie Yang. After a moment, he finally moved. He looked down at the head on his shoulder and hesitantly, carefully and in an unaccustomed manner, placed his hand on Xie Yang’s back to support his body.

As at the beginning there was a conflict with the nephew of the ML but later they resolve it and they become a true family and how is the female protagonist who did deplorable things but in the end you see that even she had some conscience left.

The scene in the hospital where Xie Yang shaves Qiu Xing's hair and the mother and nephew are there to witness it and talk, laugh and comfort the ML seems so endearing and affectionate but with a touch of bitterness that made me strangely shed tears it was so beautifully written. I sympathized with the emotions of the nephew who said that it was clearly a loving scene but why did he feel so bitter, if that was my feeling.

and I achieved it thanks to Xie Yang as she told him "you are our miracle". Love the scene where she finally can't take it and has to go to the other side but she's still worried about what will happen to her son and finally Xie Yang shows her his power and tells her to rest easy. I got so emotional because she finally dies with a smile on her face and so relieved that even the reader understands her emotions.

Even his nephew after a while comes to understand him, and his moments become so endearing since, in a way, they are his only family.

and he was the one who saved him

I would have wanted the issue of Xie Yang's power to Qiu Xing to be brought up, but it may sound weird but I feel like it somehow implies that Qiu Xing knows. I may be hallucinating but there are certain minimums that Qiu Xing knows that Xie Yang did something with him but that he does not raise it and simply lets the matter go, if this is true my respects to the author for how he left these clues scattered in the middle.