That day, Cao Mao tried fighting Xie Tian’s clone at 300% difficulty for the first time.

The result was obvious – Xie Tian owned him within three minutes. Without the help of Killer Queen and White Album, Xie Tian and his cheat weapon overpowered Cao Mao. He couldn’t even force Xie Tian to use [Return to Zero].

The fight reminded him that local protagonists could be overpoweringly and ridiculously dangerous if he let them mature, especially after they acquired enough combat experience.

Fortunately, Cao Mao didn’t lose anything after that rematch other than his sanity. His anxiety skyrocketed off the chart that he had to summon Jiang Lan to dual-cultivate for hours before he could calm down.

When Cao Mao came back to his senses, Jiang Lan was already out of commission. Her hips couldn’t stop shaking from the countless orgasm while she was semi-drown into the puddle of white juice.

“Fwoo. I feel better,” Cao Mao wiped his sweat and patted Jiang Lan’s sexy butt, thanking her for the service.

Ding

[You have dual-cultivated with Jiang Lan]

[You have condensed 10 drops of Life Essence.]]

[You have acquired 9 drops of Life Essence.]]

[Jiang Lan has digested one drop of Life Essence.]]

Different from before, the feedback from the system got shorter. It didn’t inform him how he robbed his partner’s yin Qi or share his yang Qi anymore. Moreover, his partner got less essence energy from each dual-cultivation session.

But there was more.

Ding

[You can dual-cultivate in manual mode. Would you like to try?]

“Manual mode?”

So far, Cao Mao was using the auto mode ever since he had come into this world. He never properly dual-cultivated like a dual-cultivator in novels. They were supposed to exchange energy and complete each other’s yin and yang, then they could get stronger. But in Cao Mao’s case, he simply generated energy from sexual intercourse aftermaths.

“What’s the difference? Why should I use the manual mode?”

Ding

[Manual Dual-Cultivating can net you double or triple the amount of Life Essence per session if you can do it properly.]

“Oh!?” That was tempting. Cao Mao was interested, “What’s the catch? What do I need to do?”

[Currently, your default energy is life essence, which has high compatibility with wood Qi. You need to secure a partner with the same element Qi to initiate the manual mode to reap the best benefit.]

Cao Mao scratched his head and sighed. All yin slaves were still cultivating yin essence, and none of them could use any element Qi. Only Ju Chen could, but he doubted that she could absorb wood Qi.

“What will happen if I use the manual mode on others without the same element Qi as me?”

[The benefit will be less. For example, if you dual-cultivate in manual mode with Ju Chen, you will obtain 20 Life Essence at max. There will also be high chances that both you and Ju Chen will lose control of your element Qi during the process.]

In other words, this mode might be risky. Furthermore, it would become a hassle, and sex wouldn’t be as enjoyable anymore when he had to focus on something else during the deed.

“Meh, what’s the point of doing it in manual mode, then?”

[After each session in a PROPER manual mode, your dantian and your partner’s dantian will expand a bit, and your meridians will be strengthened. Your element crystals will generate more element Qi and life essence drops while your partner’s yin essence will slowly evolve into life essence.]

[If you dual-cultivate with a partner without wood Qi, you will not get anything in return other than the increase in Life Essence. However, your partner’s dantian will slowly adapt to the wood element. But if you dual-cultivate with a master of other element Qi that you don’t have, you can increase your compatibility with that element while your partner can do the same.]

[All in all, it’s a leeway to learn another element power without going through the tribulation hassle.]

Hearing the explanation, Cao Mao thought of Ju Chen.

During the previous battle against Fu De, Ju Chen demonstrated her power with blood element and water element. She ate a cultivator’s water element shield without a backlash while she controlled blood energy with ease.

Blood Element Qi was unique. Although it was an ability from an evil sect, it might be useful for Cao Mao in the future, considering that he had learned many related techniques, such as Vampiric Touch, Blood Extraction, and others.

“Will the manual mode be life-threatening if I use it in this space?”

[No. If you or your partner dies in the process, the space will resurrect you and restore all your energy to the state before the activity. You can rest assure.]

“Okay.”

It still sounded dangerous to Cao Mao.

Knowing the System Sponsor’s trolling habit, Cao Mao didn’t believe in the system messages. Although he wanted blood element ability from Ju Chen, he chose not to risk trying it on her first.

A trial and error test had to be done first. At least, Cao Mao had to experiment with this mode on someone to see its effect firsthand before he moved on to his goal.

Cao Mao looked at Jiang Lan, thinking if he should continue using her. Unfortunately, she was out cold, so it was inappropriate to use her.

The next candidate would be Kang Yan, who was strongest after Ju Chen. She should be able to handle rampaging wood Qi in his life essence. Then, again, Cao Mao couldn’t afford to lose her since she was too talented in swordsmanship, so he couldn’t use her as a guinea pig.

Since Cao Mao couldn’t use the three slaves, he thought of the other ten girls, whom he had rescued.

The leader of the group, Pan Xiaofan, was from JY School. She also had a lessor succubus bloodline, which made her compatible with demonic essence. Her current cultivation base was at the initial stage of Essence Gathering Realm, aka the 4th-stage.

Among the ten, Pan Xiaofan was the most diligent servant. Since she benefited a lot from dual-cultivation sessions, she was always at the forefront whenever Cao Mao needed a partner.

In terms of combat abilities, Pan Xiaofan was the same as other JY School disciples – below-average. Thankfully, she had one of the system rings, so she had learned one of Cao Mao’s system skills, Shadow Restrain +20, so she could fight as a supporter. Pan Xiaofan also planned to copy Cao Mao’s Shadow Explosion to complete the synergy whenever the 1-year cooldown reset.

Still, being a supporter forever was bad for Pan Xiaofan’s future and her mindset. Cao Mao wanted to make her more useful.

Thus, Cao Mao summoned her to the space.

Light flashed and Pan Xiaofan appeared inside the space, naked as usual. She was sitting cross-legged, circulating her Qi according to Moon Meridian Scripture.

When Pan Xiaofan realized that she couldn’t absorb Yin Qi from the moon and the night, she opened her eyes.

“Ah! Master, do you require my service?”

Without complaining, Pan Xiaofan smiled and stopped cultivating.

Pan Xiaofan’s complexion got better after Cao Mao nurtured her back to her health. She was a pretty lady with silky semi-long hair that only touched her shoulders, who could be mistaken as a gentle teenage maiden in the modern world. In reality, she was already 29 years old who had plenty of experience in the sex industry.

Pan Xiaofan was 165cm tall, and her thin waist was about the same size as Jiang Lan. As she had just given birth to a child recently, her round smooth shiny breasts and perky hips got bigger than before, giving her an erotic maiden image.

Looking at Pan Xiaofan’s clean naked body, Cao Mao had the urge to jump her right away, but he refrained himself. He explained what he needed her to do.

“Fan’er, I’m planning to teach you how you can use wood element Qi.”

“Really?” Pan Xiaofan jumped in joy, “You’re teaching me personally?”

“Yes. But the method is a bit sketchy.”

Pan Xiaofan observed Cao Mao’s awkward expression and his twitching meat pole. She giggled, “If you want to partake of me, you can do so anytime and anywhere. You don’t have to make up a silly excuse like that.”

Cao Mao wanted to cry. He was serious, but Pan Xiaofan misunderstood him.

It took Cao Mao a few minutes to explain his circumstances and his purposes. He wanted to practice a new dual-cultivation technique, and he wanted to try it with Pan Xiaofan first.

“I see. This might be a risky session, right?”

“Yeah, I’m sorry.”

“You don’t have to apologize. The moment that you’ve rescued me from that prison and healed me, my life is always yours. You can use me as a guinea pig or test subject.”

Pan Xiaofan’s frankness pained Cao Mao. He started to feel guilty for this yin slave as she was too selfless.

“Don’t worry. I’ll stop when it gets dangerous.”

…

Pan Xiaofan wholeheartedly entrusted her life to Cao Mao’s hands. The latter began the intercourse normally, but he kept asking the system for advice.

The system was cooperative this time. It taught Cao Mao the real dual-cultivation technique step-by-step.

[Remember the 3 rules of thumb. First, when you’re stronger than your partner, you shouldn’t steal any Qi strand from the girl.]

[Secondly, your life Qi is more potent than ordinary yin or yang Qi, and they contain a tinge of the wood element. Therefore, move a strand of Life Qi into your partner’s body one at a time.]

[Lastly, help your partner move the Life Qi through her 12 meridians. Whenever you use the manual mode, focus everything in the Life Qi strands inside your partner’s body. Ignore the worldly pleasure.]

As Cao Mao had expected, the manual mode wasn’t fun.

Cao Mao concentrated on his Life Qi strand in Pan Xiaofan’s body. It went from his genital into her womb. Then, it circulated through her meridians.

Pan Xiaofan gritted her teeth in pain as the strand contain weak wood Qi. It damaged her blood vessels and her internal organs as it moved around.

Cao Mao fed hollowed spring water into Pan Xiaofan through kisses. After that, her complexion got a bit better.

When the Life Qi strand completed one circle, it returned to Cao Mao’s dantian. He didn’t gain anything from the session, but Pan Xiaofan got something for the trouble.

Ding

[Pan Xiaofan’s wood element compatibility has increased by 0.01%]

It took Cao Mao five minutes to complete one circle. He was too absorbed in the task that he forgot about sexual pleasure.

On the other hand, Pan Xiaofan enjoyed the sensation of the mild wood element in Cao Mao’s Life Qi. It felt like he had caressed her everywhere, which aroused her. Without realizing herself, she hugged him and moved her hips.

Presently, Pan Xiaofan was sitting on Cao Mao’s lap, riding him while she was hugging him. Because of the previous kiss, Pan Xiaofan sealed her mouth with his mouth, refusing to let it go.

Cao Mao embraced her tight. He moved another Life Qi strand into her body again.

However, because of the intense stimulation from Pan Xiaofan’s hips and the tight squeeze, Cao Mao ejaculated.

Ding

[From this point on, the system shall guide you on how you can manipulate Origin Yin Qi in your partner’s womb and Origin Yang Qi in your semen.]