I Get Rewards Whenever Someone Thanks Me

[System, Urban Fantasy, Cultivation...] On the eve of graduation, Cui Wen worked up the courage to confess to the campus beauty he'd secretly loved. She merely replied, “Thank you. You're a nice guy,” then turned and walked away. Just then, a streak of light flashed across the sky. He seemed to hear a mature female voice say, “Master.” A voice suddenly rang out in Cui Wen's mind: “Ding! Thank you for binding the System.” “A System? I actually got a System!” Cui Wen was overjoyed. The System's voice sounded again: “Host has received the campus beauty's thanks. Random reward triggered.” Cui Wen was furious. “You call that thanks?” But as he spent more time interacting with the System, Cui Wen gradually realized that something about it seemed off. Follow Cui Wen as he uncovers the secrets hidden behind the “System,” step by step.