Why Hasn't the Heroine Broken Her Guard Yet?

Yu Cheng: It's hard to like people, but isn't it easy to make people hate you? System: The host only needs to collect 10,000 negative emotion points from the target person to complete the task. Yu Cheng, the perennial bottom player in Chuan Shuju, smiled slightly. The heroine Jiang Ning was chosen from a poor family in the original world. Yu Cheng threw the dinner plate in front of Jiang Ning: It's such a waste to dump the leftovers, why don't you eat it? Yu Cheng threw a bag of garbage on Jiang Ning's desk: I am idle and I am idle, please help me! Yu Cheng took out a colored pen and smeared it on Jiang Ning's face: "Wow, look, your face is very suitable for painting a bastard!" Yu Cheng felt that he was extremely bad, but why didn't Jiang Ning's negative emotion level increase? Are you so stable? Aren't you angry about this? Yu Cheng didn't believe it and worked harder to bully Jiang Ning. Unexpectedly, Jiang Ning not only did not break her defense, she even smiled provocatively at her! Yu Cheng: I feel numb. Yu Cheng decided to change the target person. As a result, Jiang Ning's negative emotions suddenly soared! Yu Cheng: Huh? ! The heroine finally broke through her defenses! [The very aloof but jealous Jealous King Gong x the slightly smart but not too cute Souvenir] Intention: To be determined