Blue flames enveloped Yin Ze's body and she unleashed her powers. Xuan Yi narrowed her eyes as she sensed the fog slowly dissipating. The fog was actually a means to isolate an area from the outside world and whatever that happens inside this area would not affect the outside. The fog also keeps humans out of the area which is why nobody came to disturb them no matter how loud Yin Ze was screaming when her arm got cut off. If Xuan Yi guessed correctly, the Yin Demons added a sleeping powder because Young Master Ma did not have the sachet to weaken his mind so they couldn't capture him without some effort.
These types of spells are called isolation spells because they mainly isolate the area the caster wants but the fog that the Yin Demons used is of lower-tier which could only isolate an area for a short period of time. It is unable to sustain if a battle breaks out in the area because the energy fluctuation is too much for a low-tier spell to handle which is why it is dissipating.
Xuan Yi muttered quickly under her breathe a middle-tier isolation spell and an invisible barrier appeared, surrounding the entire courtyard. She could use a higher-tier spell but there is no need if she is just dealing with a Yin Demon. Middle-tier spells could sustain themselves if a small fight breaks out within but not for too long either and Xuan Yi is confident that she can finish this within 3 moves.
Yin Ze's control of her blue flames is one of the best among her clan members and she quickly surrounded Xuan Yi with her flames. Yun Le's house is made of wood so the moment Yin Ze unleashed her flames, the wood had caught fire and the flames are spreading.
Xuan Yi did not worry about the Yun siblings as they had Young Master Ma to protect them. When she first saw the dark imprint, she knew he was not a normal human so she focused on Yin Ze who is currently seething as she throws her flames everywhere.
Stepping sideways to avoid an incoming fireball, Xuan Yi quickly twisted her body and kicked Yin Ze from the side, sending her flying and crashing to the opposite wall where her sisters lay.
"Sister, quickly kill her!" Xuan Yi could see that the Yin Demon who was pointing her fingers at her is a young one. She hasn't seen much of the world and does not know who Xuan Yi is which is why she dared to utter such imprudent words. Does she really think her sister has a chance at even injuring her?
"Sister, stop this madness! That is the Lady you are attacking!" At least the older one is more sensible. She has been trying to stop her sisters from the very beginning but did not have the courage to actually stop them.
Yin Ze ignored her sister's advice and gathered her flames into her hands as she concentrates. The flames flickered as they gathered at a single point and glowed as it's intensity increases. Giving Xuan Yi a smirk, Yin Ze unleashed it and her concentrated flames shoot out at Xuan Yi at an incredibly high speed.
Yin Ze was gloating. This is a secret move that was taught to her personally by her Highness and it is extremely powerful. She had mastered this move so that one day she could assist her Highness when the Yin Demons revolt against the Lady and take over the throne of the undead realm. If she kills her now, the Lady would praise her and she might even get promoted. Her status would increase and marrying a high ranking clan head or elder would not be impossible.
Even if this move is unable to kill the Lady, Yin Ze is confident that it would at least heavily injure her. Then together with her sisters, they can finish her off and return back to the realm of the undead with that human man and the Lady's head. Yin Ze's eyes glittered at the thought of being rewarded by her Highness, the approving look she will give her and the promise of a good marriage.
Too bad Yin Ze celebrated too early. Xuan Yi held her hand up, palms facing the bolt of fire and the moment the flames touched her palm, they immediately froze. But that was not the end of it. The fire continued to freeze and it traveled back to Yin Ze's hands, freezing the arm she has left and the ice continued to spread all over her body.
In the end, Yin Ze's entire body was frozen solid before she could realize it. Her gloating smile and vicious eyes were still in place as if she was an ice statue that was carved with this expression. The younger Yin demon screamed in terror. In her eyes, her sister was the best in the clan, the most powerful after her Highness. How could it be that she was defeated in one move?
Xuan Yi still had her hand out and her fingers gripped the frozen fire, crushing it instantly. When the ice cracked and turn into little ice shards, Yin Ze's body started to crack and collapse as well. Her sisters stared wide-eyed at the display of power as their sister whom they all held in worship died before she herself could register her death.
The younger Yin Demon glared at Xuan Yi before recklessly rushing up to her. Her powers are not as strong as she had just come of age. This is her first time venturing out to the human world with her sister after reaching the age of adulthood and she has never seen the Lady who rules all of the undead realms in action. She heard rumors that the Lady only ascended because the previous demon lord had an illicit relationship with her, that she has no real power or prestige which is why everyone disapproves of her. In her heart, she feels that her Highness of the Yin Demon clan is very suitable to be the next demon lord. Her Highness is the most powerful and the most beautiful, nobody else can compare to her. She believes that what just happened was a fluke and Xuan Yi was just lucky.
Although her flames are not as big as her elder sister, it is still considered quite powerful and the younger Yin Demon was considered a prodigy in her generation so she is quite confident in her abilities. She made her entire fist covered with her blue flame and pounced onto Xuan Yi. Xuan Yi did not sidestep her attack but took it head-on. Grabbing her wrist, she pulled the shocked little demon closer to her and punched her stomach with a great force before releasing her wrist. The force Xuan Yi used was enough to knock her out and she fell onto the floor, unconscious. Her sister quickly crawled over to her younger sister and hugged her to her chest.
Facing Xuan Yi, she begged. "Yin Si begs the Lady to let my younger sister go, she is still young and immature. Yin Si begs the Lady to pardon her," tears would be seen dripping down her cheeks as she begged for her sister's life.
Yin Demons are naturally beautiful. Maybe because they have too much Yin energy inside them that their features are naturally more feminine but each one of the clan members is a beauty. Yin Si crying in front of her would make any man feel soft-hearted and want to comfort her but Xuan Yi did not bat an eyelash at her.
"Answer my question and maybe this Lady will spare you," Xuan Yi spoke without a hint of emotion and Yin Si nodded readily.
"What is her motive?" Yin Si understood that the Lady meant her Highness of the Yin Demon clan and hesitated. If she exposed her Highness's plans, that would be betraying her clan. Seeing her hesitation, Xuan Yi cracked her fingers and Yin Si widened her eyes in fear as though it was her neck being cracked. She shook away her doubts and sat up straighter as she faced the Lady. The Lady is the ruler of the undead realms so all of the clans are to serve her.
"If my Lady could guarantee our safety, Yin Si will answer the question." Xuan Yi could see the hard determination in Yin Si's eyes as she clutched her younger sister in her arms protectively.
But Xuan Yi is not here to negotiate. She just wants answers and she is going to get them even without Yin Si. Yin Si could see that the Lady is not pleased and placed her bet on her intuition. She has ventured out of the clan on official matters along with her dead sister and heard many stories. Although there were people who were unhappy with the current demon lord, there were many stories of the Lady's kindness. Yin Si prayed that those stories are true as she took a deep breath before she answered the Lady's question.
"Her Highness was weakened recently due to a backlash. She was cultivating a forbidden art that promises a huge power growth if successful. However, she failed and her cultivation took a hit. She needed a lot of yang energy to quickly rebuild her cultivation which is why when she sensed a human male with a pure yang constitution, she immediately sent sister to capture him." Yin Si heaved a sigh. The head of the Yin Demons had broken two laws; cultivating a forbidden art and capturing a human. These two are enough for the Lady to confine her for a few decades as punishment.
Having gotten her answers, she withdrew a ring from her personal space and threw it at Yin Si. Yin Si quickly caught the ring before it fell onto the ground. She then looked at the Lady, confused.
"Take this ring and go to the palace. Show it to them and ask for Chen Xiu," Xuan Yi told her and turned away from them. Since Chen Xiu was the one who bought the water ghost into her main hall in the first place, he should handle these two as well. Yin Si blinked rapidly as she processed with the Lady had just said. After confirming that she did not hear wrongly, she kowtowed deeply and repeatedly thank the Lady for her grace. If the Yin Demons are to revolt, at least her sister and she will not be part of it. At least they would survive.
Xuan Yi then looked at the calm Young Master Ma. Young Master Ma had erected a barrier of his own when Yin Ze started fighting. Xuan Yi walked to the edge of the barrier and tapped on it with her slender fingers before giving a smile that does not reach her eyes at all.
"Care to explain yourself?"