With their high experience and high cultivation, Xuanyin Yue and Shuang Yuzhu managed to learn the first stage of the Absolute Yin Sutra in less than five minutes.

Ling Yun monitored the changes in the two women’s bodies, as he did not witness Sheng Ming learn the technique. He raised an eyebrow as he sensed the changes in their bodies, especially the flow of qi within them. ’Two different flows of qi? Could it be their Yin meridians? One is ordinary qi, and the other is their yin qi.’

Ling Yun’s lips curled up into a smile when he saw the changes in Xuanyin Yue and Shuang Yuzhu’s bodies, and they looked more alluring than before.

Shuang Meixue suddenly entered the room; she was surprised by Ling Yun’s presence, but he signaled her not to say anything because Xuanyin Yue and Shuang Yuzhu were seriously learning the technique.

Ling Yun touched Shuang Meixue’s forehead and shared the Absolute Yin Sutra with her, surprising her. ’Go on, learn the technique and join them.’

’Yes, brother-in-law.’ Shuang Meixue hurriedly sat cross-legged beside her big sister, and she immediately closed her eyes to learn the technique. ’Where did my brother-in-law get all his techniques? None of them are ordinary, and his dual cultivation technique is beneficial for my body even though I haven’t learned it for long.’

Shuang Meixue’s face turned red as she remembered Ling Yun’s yang qi, which she had already ingested before she arrived at his residence. She shook her head, banished the thought, and began learning the Absolute Yin Sutra.

Just like Xuanyin Yue and Shuang Yuzhu, Shuang Meixue had no difficulty learning the first stage of the Absolute Yin Sutra. She managed to master it in just five minutes, bringing significant changes to her physique and aura.

Ling Yun nodded in satisfaction with Shuang Meixue’s speed in learning the technique. From the beginning, he recognized his sister-in-law’s extraordinary talent, and his guess has now been confirmed. He didn’t leave the room, waiting for the three women to finish learning all stages of the Absolute Yin Sutra.

Half an hour later, Ling Yun noticed another change in the three women’s bodies, and their skin became as flawless as jade. At first, they were beautiful and charming, and they became even more captivating after mastering the second stage of the technique.

Another hour passed, and the three women had mastered the third stage of the technique. Their aura became stronger, and they looked more enchanting.

Unlike the previous three stages, it was quite difficult for the three women to master the fourth stage. They spent six days forming their Yin Qi core, which was based on the flow of time within the residence.

Ling Yun scanned the three women’s inner bodies, finding two different cores in their dantians. One was their normal cultivation cores, and the other was their Yin Qi cores. He could sense that the flow of Yin Qi within their bodies had become stronger, flowing rapidly within their Yin meridians.

As another day passed in the outside world, the three women finally completed all stages of the Absolute Yin Sutra. They didn’t open their eyes immediately, but they first felt the changes in their bodies. They could hardly believe that they now had two cores in their dantian, and the flow of Yin Qi within their bodies was incredible.

Xuanyin Yue and Shuang Yuzhu took out a bottle of Ling Yun’s yang qi from their storage ring, and they hurriedly drank it to experience for themselves the benefits of the technique. Shuang Meixue was a little hesitant about it because her brother-in-law was in front of her, but she ultimately decided to drink a bottle of his yang qi.

Ling Yun just smiled when Shuang Meixue drank his yang qi, and her face turned beet red from embarrassment. ’This woman is more innocent than her sister, but they are equally adorable.’

Xuanyin Yue, Shuang Yuzhu, and Shuang Meixue were completely satisfied after they experienced the effects of the Absolute Yin Sutra, combined with the effects of the Yin-Yang Art, giving them confidence that their cultivation would improve even more rapidly in the future.

"How do you three feel?" Ling Yun asked them.

"Amazing!" Shuang Yuzhu was the first to exclaim. "The woman who created the Absolute Yin Sutra is truly a genius, husband! After I formed my Yin Qi core, the flow of Yin Qi within my body became faster and thicker, and the effects were even more remarkable once I drank your Yang Qi."

"That’s right," Xuanyin Yue agreed with her disciple. "Who exactly was the Ancient Heavenly Maiden? How did she create such a technique?"

"The Ancient Heavenly Maiden was Shangguan Tiannu, and she created the technique with the help of the old dragon." The three women naturally knew that the old dragon Ling Yun was referring to was the Primordial Chaos Dragon, Long Hun. "Unfortunately, she was addicted to using her technique, and she killed many men by absorbing their Yang Qi clean, forcing the old dragon to kill her and destroy her Great Celestial Clan."

"Eh? How did she absorb those men’s Yang Qi, Brother-in-law?" Shuang Meixue asked in confusion.

Ling Yun explained straight away. "She used the fifth stage of the technique in the past, but I already asked old dragon and Sheng Ming to change it. This way, you guys can’t absorb other men’s Yang Qi carelessly, and you can only absorb your partner’s Yang Qi."

"Husband, doesn’t a female dual cultivator have many partners?"

Ling Yun shook his head at Xuanyin Yue. "Not all female dual cultivators have many partners, and many of them are loyal to their partners, just like you guys. However, evil female dual cultivators choose to live unfettered lives, and they constantly seek new partners to improve their cultivation."

"In other words, those female dual cultivators can only absorb the Yang Qi of men whose Yang Qi is already in their bodies, right?"

"That’s right." Ling Yun nodded slightly.

Shuan Yuzhu smiled mischievously and embraced her sister. "Does this mean my sister is your partner now?"

"Big Sis!" Shuang Meixue called out with a mosquito voice, and her face reddened with embarrassment.

Ling Yun looked at Shuang Meixue. "You can say it like that, but your sister is not my official partner. If she finds another man in the future, she—"

"That’s not possible!" Shuang Yuzhu interrupted Ling Yun’s words. "In this universe, there is no man worthy of being my sister’s husband other than you, Husband. You possess the ten elements; you also possess the Primordial Spiritual Veins, and most importantly, you are the next Primordial Chaos Dragon. Who is the man who can compare to you with all your advantages? If my sister marries, she must marry you."

Shuang Meixue wanted to find a hole to hide her embarrassed face. ’Ugh! Big Sis! You don’t have to say things like that in front of my brother-in-law!’

"I agree with Yuzhu, husband." Xuanyin Yue looked at Shuang Meixue. "Even though she never said it, I know she’s fallen in love with you; otherwise, she wouldn’t have swallowed your yang qi on her own accord, right?"

’Ugh! Big Sister Yue! Not you too! You two are making me really embarrassed in front of my brother-in-law!’ Shuang Meixue grumbled inwardly, but her eyes stole glances at Ling Yun.

’Hehe,’ Shuang Yuzhu smirked evilly.

"Ahh!" Shuang Meixue screamed loudly because Shuang Yuzhu suddenly pushed her forward so hard.

Ling Yun moved to catch Shuang Meixue, so she didn’t fall to the floor but into his arms. "You don’t have to act so naughty, Yuzhu."

Shuang Meixue didn’t break away from Ling Yun’s embrace; instead, she hugged him back and sniffed his manly scent. ’My brother-in-law smells so good! Ugh! What was I thinking? He is my brother-in-law!’

"Look at her, husband." Shuang Yuzhu pointed at her sister with a mischievous smile. "She likes your scent so much that she sniffs you like that."

Shuang Meixue stiffened for a moment, but she immediately pushed Ling Yun back a little, and she ran away from the room like a shy rabbit.

Ling Yun shook his head with a smile before speaking to the two women. "Try using the fifth stage of that technique to absorb my yang qi."

Unlike Xuanyin Yue, Shuang Yuzhu didn’t hesitate in doing so. She got off the bed, walked in front of Ling Yun, and touched his chest. In a moment, she could feel his yang qi flowing into her body even though they hadn’t had sex, which was simply unbelievable. "Doesn’t this affect you, husband?"

"Not at all." Ling Yun looked at Xuanyin Yue. "Come here, Yue. You can absorb my Yang Qi too, and I’ll be fine."

"Alright." Xuanyin Yue moved in front of Ling Yun, pressed her palm against his chest, and absorbed his yang qi. "I still can’t believe I can do something like this, husband. All this time, I believed that I could only absorb your yang qi if you released it into my body or when I drank it directly."

Ling Yun nodded at her. "I myself never thought that such a technique existed, but I think it’s beneficial for you and my other wives, especially while we’re in seclusion. When I dual cultivate with one of you, you guys can use this technique to absorb my yang qi and cultivate manually."

"Is it really okay for you if we absorb your yang qi at the same time, husband?" Xuanyin Yue asked with concern.

"Hehe," Shuang Yuzhu giggled. "Master, our husband has never brought you into his Chaos Dragon Domain, right?"

"Not yet." 𝘧𝓇𝑒𝑒𝑤ℯ𝑏𝓃𝘰𝑣ℯ𝘭.𝘤ℴ𝘮

"If we enter seclusion with him inside the Chaos Dragon Domain, his Yang Qi and vitality will increase significantly, so I believe there will be no problem if we absorb his Yang Qi while he dual cultivates with the other sisters." Shuang Yuzhu looked at Ling Yun. "How about you bring my master inside now?"