The food I require is simple. As long as you can reward me with ten grams of your own blood every day, place it in a clean vial, and throw it out the window at 11:55 PM, you will have what you desire." 

These words suddenly made Sun Yang break out in a cold sweat. Blood, coupled with the time it takes for a pet to eat, only one word flashed through his mind: ghost. 

Aside from those strange and terrifying creatures, who could see everything about a person without receiving any files, simply by using a computer regularly? Even the world's most skilled hackers wouldn't be able to pull it off. Sun Yang felt a little dizzy. 

He decided to uninstall immediately and not continue. 

Three 

days later, a list of students who had been admitted to graduate school changed Sun Yang's mind. He saw the name of the class beauty on the list. However, it was well known that she was not outstanding in any aspect except her appearance. So, amidst the rumors and doubts, Sun Yang decided to find out. 

He thought of the skeleton. 

Sun Yang reinstalled the skeleton pet and, according to the prompt from that day, threw the blood out the window on time. Then, he entered the class beauty's QQ number below the skull portrait. 

Everything went smoothly after that, except that Sun Yang did not see the secret of admission to graduate school through the class beauty's computer, but the other side of the rumor - Professor Zhang. At that time, the two were doing that shameful thing in the video, and Sun Yang took a photo as a souvenir with great pride. A few days later, he saw the two of them dating in Professor Zhang's dormitory. Sun Yang had prepared screen recording software in advance and successfully recorded the whole process. Then, while forcibly suppressing his primitive impulse caused by hormone secretion, Sun Yang pulled out the USB flash drive with trembling hands. He wanted to see Professor Zhang as soon as possible, and then... 

When going downstairs, Sun Yang bumped into the landlord, a very strange middle-aged man. It seemed that he was the only one in the family. He had never seen his parents, wife and children. But this single man, seemingly a "lay monk," actually asked Sun Yang, after he gave him a copy of his ID, "Why didn't you bring your girlfriend?" Sun Yang was somewhat baffled, but he couldn't help but answer, so he shyly replied, "How could I have a girlfriend? I've never been in a relationship." From then on, this single man became exceptionally attentive to Sun Yang, even offering to wipe his sweat while helping him move his computer. Sun Yang felt his hair stand on end. Even more surprising to Sun Yang was that everyone living in this small building was male. There were no single women, not even couples. But since he had already paid three months' rent, he had no choice but to stay. 

"Going out," the landlord asked with a smile. 

"Yes, back to school," Sun Yang said as he hurried downstairs. 

"Slow down," the landlord said, his voice deliberately lowered. The voice sounded remarkably familiar... 

Professor Zhang 

"This...this...how is this possible?" Professor Zhang's initial response to Sun Yang was tinged with obvious unease. 

"Professor Zhang, nothing is impossible. Just guess what the consequences would be if I shared this video..." Sun Yang's words tinged with a hint of pride. 

Despite the suddenness of the situation, Professor Zhang remained calm. He quickly regained his usual serious demeanor, frowning as he muttered, "How is this possible? Could it be..." 

"Professor Zhang, give me an answer quickly. My patience is limited." Sun Yang began to speak in a domineering tone.

Professor Zhang glanced at the impatient Sun Yang and replied with a tone of infinite disdain, "You?" 

"Me. What's wrong with me..." Sun Yang was a student after all, and no matter how confident he was in front of a professor, he still felt nervous. 

"You're the one. Now delete the contents of the USB drive," Professor Zhang said suddenly and straightforwardly. 

This statement sent Sun Yang to the brink of excitement, almost to the point of ecstasy. However, Sun Yang quickly suppressed his joy, saying, "I'll delete it when I get the notice," and then swaggered out of Professor Zhang's office. 

The initial victory had given Sun Yang a taste of sweetness, temporarily ignoring the horrors of "feeding pets with blood," and he began to act recklessly.