Cheng Fei complained that he didn't explain to himself before he turned into a butterfly, which caused him to look everywhere and be frightened. If it weren't for his impression of this rare little blue butterfly, considering that the little butterfly might be the body of the subtle, it was likely that he would have come to a burst chestnut and directly bounced off the body of this little butterfly essence from Mai Xizhen.

Mai Xizhen smiled: "Then you will make a lot of money! When Xiyou's defense is low, if you play so hard, she is likely to die." She's not a butterfly spirit, she's a demon, she's an immortal butterfly! I warned you before, even if you accidentally kill her, you will be a big step closer to death, at least lose your vitality for one or two decades, and no one can save you. ”

There is no introduction to the immortal butterfly in the book that Cheng Fei has read, anyway, he is waiting for the rescue to do nothing, so he simply asked Mai Xizhen to talk about it in detail.

The undead butterfly is a special species, although it has been passed down for a long time, but its number is scarce, so there are not many relevant accounts.

The ancestors of the undead butterflies are a little complicated, the paternal line is the family of the super strong people of the human race, and the maternal line is the super monster family that can transform into a human form, and their interactions were initially based on various reasons based on interests.

Later, the patrilineal family had a stronger marriage partner, and began to alienate and suppress the matrilineal family, and the common children of both sides were also given a cold reception, and those who had a good relationship could only interact secretly.

Three generations later, the new marriage partners of the patrilineal family wanted to erase the influence of the matrilineal family in the patrilineal family, and began a large-scale hunt for the matrilineal family, which was naturally met with desperate resistance from the matrilineal family.

After a hundred years, both sides have lost and lost, but the patrilineal family and the new marriage partner have a slight upper hand, and the matrilineal family has chosen to avoid the prosperity of the world in order to retain the bloodline inheritance.

The natal form of the matrilineal family is a palm-sized colored butterfly. When showing the natal form, scale powder is a bonus auxiliary for refining, talismans, arrays, and alchemy. When transformed into a human form, the crystal moist beads of sweat can be used in medicine to cure all kinds of diseases, and the taste in the mind can be adjusted when it is used in dishes and pastries.

Patrilineal families and new marriage partners have been trumpeting and exaggerating the effects of scales and beads of sweat, leading to an endless stream of hunts and hunts for matrilineal families, forcing matrilineal families to painstakingly research new life-saving techniques. Whoever kills their clansmen will have their life force transferred to the slain clan, and the more extreme the method of killing, the more life force will be transferred, until they are completely resurrected.

For their pursuers who do not wantonly kill them, they will also open their nets, so that they can fall into the illusion of peace and happiness, without feeling the double passage of time, and those more than half of the life force is directly transformed into their life force.

It is difficult for those who fall into their illusion to free themselves, but it is also impossible to get liberation by killing them. Whether it is the hand of the person involved or not, the person will die soon after their death, and they will soon be resurrected.

Because their natal form is the Colored Butterfly, the name of the Immortal Butterfly was spread at that time, and this name was also recognized by themselves, just enough to deter those who wanted to kill them.

The attributes of the exercises are different depending on the color of the immortal butterflies, but most of the exercises are based on dancing their wings and raising the wind.

The undead butterflies have the blood of the human race flowing in their bodies, so they like the life of humans very much, but because of the hatred in their bones, they don't want to have too much contact with the human race.

After the Immortal Butterfly group stabilized, because night was not the most active time for the Terrans, they left behind a ban that could only transform into human form at night.

In order to prevent being used by people with ill intentions, while leaving the ban, he also left the ancestral precept that he was not allowed to take the initiative to explain his identity.

Cheng Fei couldn't help but worry about himself, and when he saw Xiyou for the first time, Xiyou said that he wanted to devour his life force.

Mai Xizhen smiled and comforted Cheng Fei, Xiyou's temperament is very lively, she likes to play with people, she is just teasing him.

Cheng Fei nodded, and said in his heart, where is it very lively? Is it okay to be too lively? I don't wear a piece of clothing in front of myself, I just dangle in white flowers, and it is still a rare beauty in the world, it is simply a test of my willpower!

Mai Xizhen seemed to see through what Cheng Fei was pondering, and she told Cheng Fei that her relationship with Xiyou has always been very good, and Xiyou often goes naked when she is alone with her in order to let her collect the crystal moist sweat beads at any time.

Yesterday, she came back in the middle of the night, and the reason why she didn't wear clothes was because she had just returned, and the remaining sweat had not disappeared, and it was a good time to collect sweat beads. The second is because He Yaosheng did not kill the remaining well carp that was imprisoned by him, and assisted the two brothers and sisters to absorb the vitality of the well carp, so the sweat beads last night added a new active ingredient and made it more precious.

Brother and sister, Cheng Fei showed doubts.

It turned out that the orange immortal butterfly and Xiyou were brothers and sisters, because of a misunderstanding, they devoured the vitality of a distant nephew of He Yaosheng eleven years ago, causing the distant nephew to lose confidence in everything after aging excessively, and died depressed. His parents sent the white-haired man to the black-haired man, and a year later he couldn't afford to fall ill, and when he Yaosheng arrived when he heard the news, he had already lost his skills.

At that time, Xi Yu and her brother's magic power was far less than it is now, and He Yaosheng easily took the two of them and prepared to bury them both.

Although He Yaosheng knew that they were immortal butterflies, he didn't know how to kill them safely, and it was a little too cruel to be buried alive after being imprisoned, and there was no guarantee that someone would come to save them, and it would be troublesome to dig a grave to vent his anger.

However, Mai Xizhen found that the siblings' residence was dedicated to the tablet of He Yaosheng's distant nephew, and the futon in front of the tablet had already been worn out, and knew that the two had realized the mistake they had made. And the brother and sister have also taken care of the two old people in many ways in the past year, but unfortunately they have never been able to replace the deceased family affection.

What touched Mai Xizhen's young heart even more was that the two brothers and sisters were vying to die, just to save the other.

So, Mai Xizhen interceded for the brother and sister.

What really made He Yaosheng change his original intention was that the two brothers and sisters saw that he and Mai Xizhen were very kind-hearted, and after asking He Yaosheng and Mai Xizhen to keep secrets, they sincerely told each other how to kill them safely, only to leave one of the inheritance bloodlines. This honesty made He Yaosheng, who was already shaken, completely lose his anger and murderous spirit.

After all, it was an unintentional mistake, and they sincerely repented, and Yaosheng had plans to let them go, but they were determined to atone for the harm they had caused.

So, when his brother followed He Yaosheng, he served He Yaosheng as a nephew, and changed his name to He You.

When her sister followed Mai Xizhen's side, she closely protected the little prodigy with a talent for medicine that He Yaosheng had inadvertently discovered, and changed her name to Xiyou, and Mai Xizhen regarded each other as sisters.