Sofia left Tang Min's room and headed to her own, eager for a moment's respite after the day's hectic events. She quickly fell asleep, exhausted. Her rest, however, was interrupted early the next morning by her phone ringing incessantly. Groggily, she answered, her voice dripping with irritation.

"You better have something important, or I will kill you today, brother," she snarled.

Tang Min's pleading tone softened her slightly. "Sofia, can you come to my room? I have something important to discuss."

Sofia sighed, feeling the weight of her responsibilities. "Sure," she replied before hanging up. She got dressed and left for Tang Min's room, reflecting on how this was supposed to be her last day of leave before school resumed. She had hoped for a day of rest, but it seemed that was not to be.

Upon entering Tang Min's room, she found him visibly shaken. He took a moment to gather himself before speaking. "You know my best friend Lin betrayed me, right?" he began, his voice filled with a mix of anger and disbelief. "Just because he was jealous of my talent in computers, he wanted to steal my software and use it for his own gain, hoping to score the highest in our assignment. It's so ridiculous! He thought that by losing my software at the last moment, I would be disgraced. To achieve this, he even hired a world-class hacker."

Sofia listened, her expression cold and unreadable. Tang Min continued, "We've been friends for years, yet I never knew he harbored such jealousy. After talking with him, I decided not to call the police for the sake of our years of friendship, but our relationship is over. From now on, I don't have a friend like him."

Sofia saw the hurt in her brother's eyes, but she wasn't one for emotional comfort. Instead, she offered a distraction, her voice as cold as ever. "Do you want to learn hacking from me?" she asked abruptly.

Tang Min looked surprised but intrigued. "Really? You'd teach me?" he asked, his eyes lighting up with the prospect.

"Yes," Sofia replied, her tone matter-of-fact. "If you want to ensure no one can betray you like this again, you need to understand how these things work."

The shift in focus worked. Tang Min's face brightened, his earlier sadness replaced with eagerness. "Please, Sofia, teach me. I want to be as good as you."

Sofia nodded, a faint smile playing on her lips. She could see the determination in her brother's eyes, and she respected that. "Alright, let's start with the basics."

As she began to teach him, her demeanor remained cold and professional. She was ruthless in her instruction, allowing no room for mistakes. Tang Min, despite his initial cheerfulness, quickly realized how demanding Sofia could be as a teacher. But he didn't mind; he was driven by a newfound resolve.

Sofia watched him struggle and persevere, her respect for him growing. She knew that this experience had hardened him, and in some ways, she saw a bit of herself in his determined pursuit of knowledge and skill.

By the end of the session, Tang Min had learned more than he had ever thought possible in such a short time. He looked at Sofia with gratitude. "Thank you, Sofia. I feel like I'm starting to understand."

Sofia simply nodded. "Good. Keep practicing. And remember, never let your guard down. Trust is a luxury we can't afford."

Sofia's eyes gleamed with a hint of mischief as she typed furiously on Tang Min's laptop. "Now, let me give you a practical lesson," she said, her tone cold but exhilarating. Tang Min, confused, asked, "How?"

She smirked. "Idiot, we will hack someone's laptop."

Tang Min hesitated but couldn't hide his excitement. He nodded, eager to see Sofia in action again. Sofia decided to target Roy Group, known for its top-notch software security. It would be the hardest to breach, but she thrived on challenges. Her fingers danced over the keyboard, entering the virtual space of Royalties Group and honing in on Christ Roy's laptop.

At that very moment, Christ had just finished a grueling meeting and was sitting in his office, immersed in his work. Suddenly, his laptop screen went blank. He didn't panic but instead chuckled softly. "Interesting," he murmured, recognizing the signs of a sophisticated hack attempt.

Back at Tang Mansion, Sofia's screen displayed a series of complex codes and defenses. She explained each step to Tang Min, her voice steady and instructive. "Look at this firewall, Tang Min. It's one of the best I've seen. But nothing is impenetrable."

Tang Min watched in awe as Sofia bypassed layer after layer of security. However, Christ was no passive target. He immediately launched countermeasures, setting traps and decoys. His experience in dealing with cyber threats was evident.

"He's good," Sofia muttered, a rare smile creeping onto her lips. She relished the challenge. She continued her assault, employing advanced techniques to dodge Christ's defenses. Tang Min could barely keep up with her pace, but he absorbed everything he could.

Christ, on the other end, was equally engrossed. "Whoever this is, they're a pro," he thought, intrigued by the hacker's skill. He decided to turn the tables and trace the intrusion back to its source. As Sofia pushed deeper into his system, Christ began tracking her digital footprint.

Suddenly, Sofia's laptop beeped. A warning message flashed across the screen. "He's trying to trace us," she said, a note of admiration in her voice. "This just got more interesting."

Tang Min's excitement turned to apprehension. "What do we do now?"

Sofia's eyes narrowed with determination. "We play the game to the end." She swiftly set up a series of diversions, masking their location. She then launched a final, concentrated effort to breach Christ's laptop. She managed to get through, accessing his files just as Christ pinpointed their general location.

"Got it," Sofia declared triumphantly, downloading a few files before severing the connection. She quickly encrypted their trail to prevent Christ from following them completely.

Christ leaned back in his chair, a bemused expression on his face. He had lost the round, but he was impressed. "Who are you?" he wondered aloud, his curiosity piqued. This hacker was not only skilled but also bold enough to challenge him directly.