Chapter 1289: Despite discovering it, it proved useless. The battle continued for a short while, and by the time Xu Huaing was already drenched in sweat from head to toe. Yet this woman seemed to possess an unyielding determination, as if genuinely challenging Lu Yun, refusing to break her rhythm for nearly five minutes—never once stopping. Such a determined woman was truly rare. Lu Yun watched in growing frustration, realizing this wasn't mere pleasure; she was clearly pushing herself to the limit. If she wanted to play, then let's play properly. Lu Yun sighed inwardly. Suddenly, he activated the Yin-Yang Expansion Technique. Initially, he hadn't used this technique at all, fearing that with such relentless movements from Xu Huaing, something might go wrong—imagine a perfect moment of intimacy ending with her losing her essence and succumbing to shock. That would truly be a disaster. Therefore, Lu Yun rapidly activated the Yin-Yang Expansion Technique, aiming to completely strip Xue Hua Ying of her initiative under the force of his climax. Then, when she could no longer sustain it, he would slow down—or even halt his movements altogether. Man, how intense this exertion was! Even a strong man would surely be overwhelmed. Truly, I have no idea what had possessed Xue Hua Ying—she was moving with such relentless energy, as if she were an Ultraman! Even if she were an Ultraman, Lu Yun wasn’t some little monster, was he? If Ultraman were to fight a small monster, he’d have picked the wrong opponent. Swish! Swish! Swish! With the Yin-Yang Expansion and Contraction Technique fully unfolded—merely a few dozen in-and-out movements—the already struggling Xue Hua Ying suddenly gasped aloud, her condition mirroring Zhang Yunqian's. She trembled violently, lying flat on Lu Yun's body, gasping for breath as though she had just completed an exhausting workout. In truth, it was exactly that: when Xue Hua Ying had been treated in such a manner, she no longer felt any sensation at all. The blissful, ethereal sensation that once had carried her away had long been drowned beneath the overwhelming fatigue coursing through her body. Fortunately, under Lu Yun's coordinated application of the Yin-Yang Expansion and Contraction Technique, she ultimately reached her peak climax. However, unlike Zhang Yunqian—who had skillfully modulated the intensity during their intercourse—though ultimately overwhelmed by Lu Yun's technique, Zhang Yunqian had managed to endure on Lu Yun's body for several times longer than Xue Hua Ying had. Watching her cousin reach her peak just in under ten minutes from the start of the intense session, Zhang Yunqian found herself puzzled. She was well aware that her cousin was stronger and more resilient than she was—yet now, how could she be performing so poorly? Could it be that the pace had been too rapid, combined with having watched their intimate moments for so long, pushing her body right to the brink of physical release? Zhang Yunqian couldn’t quite figure it out, so she decided not to dwell on it. Since her cousin had already been thoroughly stimulated by Lu Yun, it was only natural that she would now step in and continue the scene with Lu Yun. Though physically still somewhat drained, she felt confident she could manage several more rounds of activity with Lu Yun. The only thing that left her feeling slightly uncomfortable was that, while she had been observing Lu Yun and her cousin throughout the entire scene, she hadn’t noticed anything out of the ordinary. Gasping and breathing heavily, every cell in Xue Hua Ying's body was successively overwhelmed by waves of pleasure, until finally settling into stillness. With her mind now calm, Xue Hua Ying reflected on how just a few minutes ago, Lu Yun had brought her to such a blissful state—and suddenly felt a wave of frustration. Her aunt could endure so long, yet she couldn't even match her. Just as Xue Hua Ying had been pushing herself to the very limits of physical exertion, she hadn't noticed that Lu Yun's movements had been automatically flowing within her. Even if she had noticed, given her current state, she would surely have continued to move with him—by then, she would have lost all control over her body, simply relying on her stubborn determination to mechanically keep up with Lu Yun's rhythm. After lying on Lu Yun for a while and gradually recovering her strength, Xue Hua Ying kept replaying the scene in her mind, and finally arrived at a conclusion: her swift defeat was entirely due to her uncoordinated, frenzied movements. What surprised her, however, was that at the time, she had felt absolutely nothing—her body had been dominated by fatigue, and she hadn’t experienced any particularly intense sensations. Yet… why had she suddenly given way and released then? Xue Hua Ying’s passion had long since faded, leaving only deep confusion and astonishment. Upon hearing Lu Yun’s slightly teasing words, she didn’t lift her head, merely huffed, “What’s there to be proud of? Just a horse stumbling—by the time we’re done, I’ll show you.” Realizing her task was complete, she unwillingly rolled off Lu Yun and glanced at her cousin. Relief washed over her—there was no visible disdain or contempt in her cousin’s expression. Otherwise, she would have insisted on continuing to torment Lu Yun. “Yingzi, rest now. I’ll take care of Lu Yun’s stubborn little boy,” Zhang Yunqian said gently, then mounted Lu Yun once more. This time, it seemed determined to settle scores with her younger sister—she made no pause, smoothly guiding Lu Yun’s body into place and beginning vigorous, rhythmic movements. Lu Yun smiled, watching Zhang Yunqian performing the most basic movements on him, his mind clear and calm. The two women each had their own unique strengths—Zhang Yunqian’s was particularly snug compared to Xue Huaing. Whenever Zhang’s body rose and fell, the large dragon-head of Lu Yun’s erection would rub vigorously against the inner walls of her passage, creating a strong friction that made Lu Yun nearly unable to hold back and eager to hum. Yet Zhang Yunqian seemed different from Xue Huaing—she had a good sense of rhythm. Though her cries were deeply passionate, as if she were completely immersed in the tide of desire, she would occasionally glance at Lu Yun during the intense movements, her eyes filled with alertness, as though guarding against something. Lu Yun smiled to himself. It seemed that Zhang Yunqian had already noticed that, during their first time together, his body had been constantly chasing hers—pressing against her and following her movements. Yet… even if she noticed, it wouldn’t matter. His methods went far beyond simply chasing her!