Ding Yun's trump card was simple: she planned to fill her recently purchased pepper spray with an allergen agent specifically designed for canine stars, obtained from an advanced feline civilization.
This was a form of gene toxin, but not a virus, and it was not contagious. It could be used with complete peace of mind.
Although ostensibly designed for canine stars, the agent worked just as well on humans. This was because the toxin targeted not a single species' genes, but all carbon-based life. It would have the same effect on humans or other carbon-based life forms, including the feline stars themselves. The feline stars merely had a way to detoxify it.
The agent did not directly kill, but primarily altered a life form's genes, causing it to develop dozens or even hundreds of new allergens. It also greatly amplified existing sensitivities to certain substances, thereby indirectly causing the target's death from allergic reactions.
For example, if a life form was originally allergic to peanuts, eating a few would have little effect, perhaps causing mild itching. Only eating many would require emergency medical attention. After being subjected to this toxin, even a single peanut could cause them to die from an allergic reaction.
Alternatively, if a life form was allergic to fresh mangoes but not dried mangoes, the toxin might cause their original allergen to mutate in other directions, leading them to become allergic to dried mangoes as well. If they unknowingly ate too many dried mangoes, it could be fatal.
Furthermore, the toxin could cause a life form to develop numerous new allergies they never had before. They might experience allergic reactions or even go into shock and require emergency treatment simply from drinking water or eating an apple, due to some element within them. If the toxin caused an individual to suddenly become allergic to a substance essential for survival, they would find it extremely difficult to live normally, no matter how cautious they were. This was the terror of the toxin; the perpetrator could not even predict what the victim would die from. They might die from a peanut allergy, a durian allergy, or even from drinking water.
The toxin directly affected genes, and current technology could not detect poisoning.
Upon obtaining the toxin, Ding Yun did not immediately modify her pepper spray. This was because the allergen agent was a special short-shelf-life substance that required specialized containers for storage and sealing. In normal sealed conditions, it could only be preserved for about twelve hours. Once exposed to air, it would become ineffective within ten minutes. Pepper spray was merely an ordinary sealed container. Therefore, Ding Yun had to carefully manage the timing, not filling it too early or too late. She precisely calculated, using her primary artificial intelligence to monitor Miao Cuihua's mobile phone, the exact day the couple planned to act. Only a few hours before they were due to make their move did she fill the pepper spray with the relevant agent. She also deliberately took a nap beforehand, intending to feign sleep and wait for them that night. If she hadn't rested, Ding Yun feared she might accidentally fall asleep later. In that case, it wouldn't matter if the pepper spray was filled with the allergen agent or not; if she was asleep, how could she even spray it!
At ten in the evening, Ding Yun woke up on time. She then began to feign sleep in the bedroom, waiting. She also instructed her primary artificial intelligence to constantly monitor the mobile phone locations of Miao Cuihua and her husband. If they came too close to her, she was to be alerted immediately.
Then, came the waiting. She waited from ten to eleven, from eleven to twelve, from twelve to one, and continued until past two o'clock. Ding Yun started to feel sleepy again. She even suspected if they had changed the date. Finally, the couple made their move. They began to scale the wall as previously agreed, approaching Ding Yun's room and attempting to pick the lock.
It was actually normal for them to be late. These days, what senior high school student didn't get home around eleven o'clock? Coupled with many people staying up late, there were still many households with lights on in the neighborhood at midnight. How could they dare to scale the wall so early? Even at past two o'clock, they could see seven or eight houses with lights still on in the complex. However, they couldn't wait any longer; it was almost dawn, so they had to scale the wall and pick the lock quickly.
When Ding Yun heard the sound of them picking the lock, she actually relaxed. They had finally arrived. Fearing their lock-picking skills might not be proficient, Ding Yun hadn't even locked the door when she closed it, leaving it casually shut, worried they might not be able to open it and thus fail to harm her. Even so, the couple struggled for a considerable time, and Ding Yun could hear them picking the lock for nearly ten minutes before they finally managed to open the door. If Ding Yun had locked it, it would likely have taken them half an hour.
The door opened, and the couple then tiptoed into the house, using their mobile phones for illumination, trying to move as quietly as possible towards Ding Yun's bedroom. Ding Yun had originally planned to wait longer, to strike back only after the couple made their move, which would make her actions seem more like self-defense. However, upon seeing what Fu Haiyang was holding, she immediately decided not to risk it. The opponent was not holding a towel or something similar to temporarily cover her, nor did he intend to use a sedative to knock her unconscious. He had entered with a stick! And it was a solid wooden stick as thick as an arm. Clearly, Fu Haiyang had no intention of a gentle abduction; he likely planned to bludgeon her into unconsciousness with the stick and then take her away. If he dared to hit, Ding Yun certainly wouldn't dare to take the blow. One hit from that thing… who knew if it would cause unconsciousness or send her straight to heaven. Therefore, Ding Yun had to act preemptively. She suddenly sprang up, grabbed a pepper spray she was tightly clutching, and sprayed it directly at both of them. She aimed for their faces. They were not wearing masks, so it was a direct hit. Although the allergen agent did not take effect immediately and cause death, the pepper spray still had some effect. Upon being sprayed in the face, they both let out several screams and threw down what they were holding to wipe their faces. Ding Yun seized the opportunity, wrapped herself in the quilt, and quickly ran out, closing the bedroom door behind her. She then threw down the quilt and loudly shouted that someone was killing her, that there was a home invasion. She continued to back away, closing the main door behind her. She deliberately blocked it for nearly ten minutes, ensuring the sprayed drug had likely lost its potency, before proceeding with the next normal steps.
The subsequent events were uneventful. Neighbors were woken up to help, security guards arrived, someone called the police, and the staff quickly apprehended the couple. Ding Yun also went to give a statement in the middle of the night. The pepper spray and the wooden stick the couple brought were all taken as evidence. In short, everything unfolded as Ding Yun had predicted and according to her plan. Even with the relationship of biological parents, the fact that they attempted to sneak in, pick locks, and enter the house with a weapon intending to commit violence was indisputable. Theoretically, as long as Ding Yun refused to reconcile, they would definitely be imprisoned. However, Ding Yun's objective was not for them to go to jail, so she naturally didn't mind easing up a bit, expressing willingness to reconcile and playing the part of the benevolent victim. She cultivated an image of being wronged and forced to act this way due to their parental relationship. Even those who insisted that all parents are good in the world couldn't fault Ding Yun at this point. Thus, the matter was resolved by noon the next day, and everyone returned to their homes. Auntie Zhao even told Ding Yun that she was too soft-hearted and that this matter was certainly not over, warning that Miao Cuihua and her husband might come up with more bad ideas upon returning home. To this, Ding Yun primarily offered comfort, stating it was her misfortune to have such parents. She appeared quite distressed, sighing and complaining that there was nothing she could do about her biological parents. After all, no matter how gleeful and relieved she felt internally, she couldn't show it. As for Miao Cuihua and her husband, they returned home cursing and already contemplating how to achieve their goal without giving up. What they didn't know was that their body's genes had already begun to change. The entire transformation process would take three days, after which they would undoubtedly experience many surprises. They would eat something and then be allergic.